Fix GA workflow that publishes Apache Maven artifacts (opensearch-project#2625)

Signed-off-by: Andriy Redko <andriy.redko@aiven.io>

Author: reta

.github/workflows/maven-publish.yml

@@ -23,7 +23,7 @@ jobs:
       - uses: actions/setup-java@v3
         with:
           distribution: temurin # Temurin is a distribution of adoptium
-          java-version: 17
+          java-version: 21
       - uses: actions/checkout@v3
       - uses: aws-actions/configure-aws-credentials@v1.7.0
         with: