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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sources/src/caching/cache-cleaner.ts

@@ -55,9 +55,8 @@ export class CacheCleaner {
         )
         fs.writeFileSync(path.resolve(cleanupProjectDir, 'build.gradle'), 'task("noop") {}')
 
-        // Gradle >= 8.11 required for cache cleanup
         // TODO: This is ineffective: we should be using the newest version of Gradle that ran a build, or a newer version if it's available on PATH.
-        const executable = await provisioner.provisionGradleAtLeast('8.11.1')
+        const executable = await provisioner.provisionGradleAtLeast('8.12')
 
         await core.group('Executing Gradle to clean up caches', async () => {
             core.info(`Cleaning up caches last used before ${cleanTimestamp}`)