Set baseline JDK version to JDK-21 (#999)

Signed-off-by: Daniel Widdis <widdis@gmail.com>

.github/workflows/build.yml

@@ -27,10 +27,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v4
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 11
+          java-version: 21
           distribution: temurin
       - name: Run Gradle Check
         run: |

.github/workflows/publish-snapshots.yml

@@ -16,10 +16,10 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v4
-      - name: Set up JDK 11
+      - name: Set up JDK 21
         uses: actions/setup-java@v4
         with:
-          java-version: 11
+          java-version: 21
           distribution: temurin
       - name: Configure AWS credentials
         uses: aws-actions/configure-aws-credentials@v4

build.gradle

@@ -178,6 +178,7 @@ dependencies {
     def guavaFailureAccessVersion = "1.0.2"
     def aopallianceVersion = "1.0"
     def slf4jVersion = "1.7.36"
+    def commonsLoggingVersion = "1.2"
 
     api("org.opensearch:opensearch:${opensearchVersion}")
     implementation("org.apache.logging.log4j:log4j-api:${log4jVersion}")
@@ -231,10 +232,16 @@ dependencies {
             force("org.apache.logging.log4j:log4j-core:${log4jVersion}")
             force("org.apache.logging.log4j:log4j-jul:${log4jVersion}")
             force("org.slf4j:slf4j-api:${slf4jVersion}")
+            force("commons-logging:commons-logging:${commonsLoggingVersion}")
         }
     }
 }
 
+// Compile SDK 2.x for JDK 21
+tasks.withType(JavaCompile) {
+    options.release.set(21)
+}
+
 // this task runs the helloworld sample extension
 task helloWorld(type: JavaExec) {
     group = 'Execution'