Bump Gradle Wrappers (#499)

# Combined PRs ➡️📦⬅️

✅ The following pull requests have been successfully combined on this
PR:
- Closes #498 Bump Gradle Wrapper from 8.11.1 to 8.12 in
/.github/workflow-samples/kotlin-dsl
- Closes #497 Bump Gradle Wrapper from 8.11.1 to 8.12 in
/.github/workflow-samples/java-toolchain
- Closes #496 Bump Gradle Wrapper from 8.11.1 to 8.12 in
/.github/workflow-samples/groovy-dsl
- Closes #495 Bump Gradle Wrapper from 8.11.1 to 8.12 in
/.github/workflow-samples/gradle-plugin
- Closes #494 Bump Gradle Wrapper from 8.11.1 to 8.12 in
/sources/test/init-scripts

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.github/workflows/ci-check-and-unit-test.yml

@@ -29,7 +29,7 @@ jobs:
       env:
         ALLOWED_GRADLE_WRAPPER_CHECKSUMS: e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 # Invalid wrapper jar used for testing
       with:
-        gradle-version: "8.11.1"
+        gradle-version: "8.12"
 
     - name: Check formatting and compile
       run: |