chore(deps): Update dependency com.google.auth:google-auth-library-oauth2-http to v1.16.0

[hessjcg]

Manual update of this dependency. Something changed between versions 1.13.0 and 1.14.0 that broke authentication across all versions for GitHub Action service account impersonation.

I suspect it has something to do with the bugfix where quota project was handeled improperly in 1.13 and fixed in 1.14. We probably need to set GOOGLE_CLOUD_QUOTA_PROJECT to an appropriate value to fix the tests in the github runner.

See googleapis/google-auth-library-java#1082

Error:  Tests run: 1, Failures: 0, Errors: 1, Skipped: 0, Time elapsed: 12.232 s <<< FAILURE! - in com.google.cloud.sql.mariadb.JdbcMariaDBIamAuthIntegrationTests
Error:  com.google.cloud.sql.mariadb.JdbcMariaDBIamAuthIntegrationTests.pooledConnectionTest  Time elapsed: 12.225 s  <<< ERROR!
com.zaxxer.hikari.pool.HikariPool$PoolInitializationException: Failed to initialize pool: Socket fail to connect to host:address=(host=ignoreme)(port=123)(type=primary). Socket factory failed to initialized with option "socketFactory" set to "com.google.cloud.sql.mariadb.SocketFactory"
	at com.zaxxer.hikari.pool.HikariPool.throwPoolInitializationException(HikariPool.java:596)
	at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:582)
	at com.zaxxer.hikari.pool.HikariPool.<init>(HikariPool.java:115)
	at com.zaxxer.hikari.HikariDataSource.<init>(HikariDataSource.java:81)
	at com.google.cloud.sql.mariadb.JdbcMariaDBIamAuthIntegrationTests.setUpPool(JdbcMariaDBIamAuthIntegrationTests.java:82)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:568)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:59)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:56)
	at org.junit.internal.runners.statements.RunBefores.invokeMethod(RunBefores.java:33)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:24)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:299)
	at org.junit.internal.runners.statements.FailOnTimeout$CallableStatement.call(FailOnTimeout.java:293)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.lang.Thread.run(Thread.java:833)
Caused by: java.sql.SQLNonTransientConnectionException: Socket fail to connect to host:address=(host=ignoreme)(port=123)(type=primary). Socket factory failed to initialized with option "socketFactory" set to "com.google.cloud.sql.mariadb.SocketFactory"
	at org.mariadb.jdbc.client.impl.ConnectionHelper.connectSocket(ConnectionHelper.java:137)
	at org.mariadb.jdbc.client.impl.StandardClient.<init>(StandardClient.java:99)
	at org.mariadb.jdbc.Driver.connect(Driver.java:70)
	at org.mariadb.jdbc.Driver.connect(Driver.java:101)
	at org.mariadb.jdbc.Driver.connect(Driver.java:27)
	at com.zaxxer.hikari.util.DriverDataSource.getConnection(DriverDataSource.java:121)
	at com.zaxxer.hikari.pool.PoolBase.newConnection(PoolBase.java:364)
	at com.zaxxer.hikari.pool.PoolBase.newPoolEntry(PoolBase.java:206)
	at com.zaxxer.hikari.pool.HikariPool.createPoolEntry(HikariPool.java:476)
	at com.zaxxer.hikari.pool.HikariPool.checkFailFast(HikariPool.java:561)
	... 16 more
Caused by: java.io.IOException: Socket factory failed to initialized with option "socketFactory" set to "com.google.cloud.sql.mariadb.SocketFactory"
	at org.mariadb.jdbc.client.impl.ConnectionHelper.standardSocket(ConnectionHelper.java:100)
	at org.mariadb.jdbc.client.socket.impl.SocketUtility.lambda$getSocketHandler$0(SocketUtility.java:38)
	at org.mariadb.jdbc.client.impl.ConnectionHelper.createSocket(ConnectionHelper.java:69)
	at org.mariadb.jdbc.client.impl.ConnectionHelper.connectSocket(ConnectionHelper.java:124)
	... 25 more
Caused by: java.lang.RuntimeException: java.util.concurrent.ExecutionException: java.lang.RuntimeException: An exception occurred while fetching IAM auth token:
	at com.google.cloud.sql.core.CloudSqlInstance.getInstanceData(CloudSqlInstance.java:165)
	at com.google.cloud.sql.core.CloudSqlInstance.createSslSocket(CloudSqlInstance.java:174)
	at com.google.cloud.sql.core.CoreSocketFactory.createSslSocket(CoreSocketFactory.java:329)
	at com.google.cloud.sql.core.CoreSocketFactory.connect(CoreSocketFactory.java:199)
	at com.google.cloud.sql.core.CoreSocketFactory.connect(CoreSocketFactory.java:157)
	at com.google.cloud.sql.mariadb.SocketFactory.createSocket(SocketFactory.java:51)
	at org.mariadb.jdbc.client.impl.ConnectionHelper.standardSocket(ConnectionHelper.java:96)
	... 28 more
Caused by: java.util.concurrent.ExecutionException: java.lang.RuntimeException: An exception occurred while fetching IAM auth token:
	at com.google.common.util.concurrent.AbstractFuture.getDoneValue(AbstractFuture.java:588)
	at com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:567)
	at com.google.common.util.concurrent.AbstractFuture$TrustedFuture.get(AbstractFuture.java:113)
	at com.google.cloud.sql.core.SqlAdminApiFetcher.getInstanceData(SqlAdminApiFetcher.java:158)
	at com.google.cloud.sql.core.CloudSqlInstance.performRefresh(CloudSqlInstance.java:237)
	at com.google.common.util.concurrent.TrustedListenableFutureTask$TrustedFutureInterruptibleTask.runInterruptibly(TrustedListenableFutureTask.java:131)
	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:74)
	at com.google.common.util.concurrent.TrustedListenableFutureTask.run(TrustedListenableFutureTask.java:82)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Executors.java:539)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at java.base/java.util.concurrent.ScheduledThreadPoolExecutor$ScheduledFutureTask.run(ScheduledThreadPoolExecutor.java:304)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1136)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:635)
	... 1 more
Caused by: java.lang.RuntimeException: An exception occurred while fetching IAM auth token:
	at com.google.cloud.sql.core.SqlAdminApiFetcher.addExceptionContext(SqlAdminApiFetcher.java:426)
	at com.google.cloud.sql.core.SqlAdminApiFetcher.fetchEphemeralCertificate(SqlAdminApiFetcher.java:258)
	at com.google.cloud.sql.core.SqlAdminApiFetcher.lambda$getInstanceData$1(SqlAdminApiFetcher.java:114)
	at com.google.common.util.concurrent.CombinedFuture$CallableInterruptibleTask.runInterruptibly(CombinedFuture.java:196)
	at com.google.common.util.concurrent.InterruptibleTask.run(InterruptibleTask.java:74)
	... 6 more
Caused by: java.io.IOException: Error requesting access token
	at com.google.auth.oauth2.ImpersonatedCredentials.refreshAccessToken(ImpersonatedCredentials.java:511)
	at com.google.auth.oauth2.ExternalAccountCredentials.exchangeExternalCredentialForAccessToken(ExternalAccountCredentials.java:480)
	at com.google.auth.oauth2.IdentityPoolCredentials.refreshAccessToken(IdentityPoolCredentials.java:179)
	at com.google.auth.oauth2.OAuth2Credentials$1.call(OAuth2Credentials.java:257)
	at com.google.auth.oauth2.OAuth2Credentials$1.call(OAuth2Credentials.java:254)
	at java.base/java.util.concurrent.FutureTask.run(FutureTask.java:264)
	at com.google.auth.oauth2.OAuth2Credentials$RefreshTask.run(OAuth2Credentials.java:623)
	at com.google.common.util.concurrent.DirectExecutor.execute(DirectExecutor.java:31)
	at com.google.auth.oauth2.OAuth2Credentials$AsyncRefreshResult.executeIfNew(OAuth2Credentials.java:571)
	at com.google.auth.oauth2.OAuth2Credentials.refresh(OAuth2Credentials.java:180)
	at com.google.cloud.sql.core.SqlAdminApiFetcher.lambda$refreshWithRetry$5(SqlAdminApiFetcher.java:304)
	at com.google.cloud.sql.core.RetryingCallable.call(RetryingCallable.java:67)
	at com.google.cloud.sql.core.SqlAdminApiFetcher.refreshWithRetry(SqlAdminApiFetcher.java:311)
	at com.google.cloud.sql.core.SqlAdminApiFetcher.fetchEphemeralCertificate(SqlAdminApiFetcher.java:248)
	... 9 more
Caused by: com.google.api.client.http.HttpResponseException: 403 Forbidden
POST https://iamcredentials.googleapis.com/v1/projects/-/serviceAccounts/***:generateAccessToken
{
  "error": {
    "code": 403,
    "message": "Permission 'iam.serviceAccounts.getAccessToken' denied on resource (or it may not exist).",
    "errors": [
      {
        "message": "Permission 'iam.serviceAccounts.getAccessToken' denied on resource (or it may not exist).",
        "domain": "global",
        "reason": "forbidden"
      }
    ],
    "status": "PERMISSION_DENIED",
    "details": [
      {
        "@type": "type.googleapis.com/google.rpc.ErrorInfo",
        "reason": "IAM_PERMISSION_DENIED",
        "domain": "iam.googleapis.com",
        "metadata": {
          "permission": "iam.serviceAccounts.getAccessToken"
        }
      }
    ]
  }
}

	at com.google.api.client.http.HttpResponseException$Builder.build(HttpResponseException.java:293)
	at com.google.api.client.http.HttpRequest.execute(HttpRequest.java:1118)
	at com.google.auth.oauth2.ImpersonatedCredentials.refreshAccessToken(ImpersonatedCredentials.java:509)
	... 22 more

[hessjcg]

Closing. I will provide a different approach to these changes split into a few PRs.