Test with release build & update proguard config.

[yschimke]

Fix for #8154

Keep the DB package name since it's now a literal.

Also add a test of a release build of an app.

[yschimke]

@swankjesse I'll fix the tests in follow up

Seem regexy, maybe your other change?

https://github.com/square/okhttp/actions/runs/7308237700/job/19914706476#step:8:443

okhttp3.logging.LoggingEventListenerTest > testCacheEvents[test(AVD) - 10] FAILED 
	java.util.regex.PatternSyntaxException: Syntax error in regexp pattern near index 92
	cacheConditionalHit: Response\{protocol=h2, code=200, message=, url=http://localhost:48997/}

Exception thrown during onBeforeAll invocation of plugin com.android.tools.utp.plugins.host.apkinstaller.AndroidTestApkInstallerPlugin.
Failed to install APK(s): /Users/runner/work/okhttp/okhttp/okhttp-android/build/outputs/apk/androidTest/debug/okhttp-android-debug-androidTest.apk
INSTALL_FAILED_DEPRECATED_SDK_VERSION: App package must target at least SDK version 23, but found 21
com.android.ddmlib.InstallException: INSTALL_FAILED_DEPRECATED_SDK_VERSION: App package must target at least SDK version 23, but found 21
	at com.android.ddmlib.internal.DeviceImpl.installRemotePackage(DeviceImpl.java:1409)
	at com.android.ddmlib.internal.DeviceImpl.installPackage(DeviceImpl.java:1235)

[JakeWharton]

Why was this added? Seems unneeded.

[yschimke]

Not strictly necessary, but I wanted the full structure. Not sure whether to delete now, might leave and reconsider.

[yschimke]

Will fix those tests in follow ups.

[swankjesse]

LGTM