fix(release): add task to check Maven Central Portal plugin classpath

[DanySK]

No description provided.

[Copilot]

Pull request overview

This PR adjusts the publish-on-central Gradle plugin version and introduces a new check-lifecycle verification task that exercises the Maven Central Portal upload codepath against a local HTTP stub, aiming to catch classpath/runtime regressions early during CI and local verification.

Changes:

• Downgrade org.danilopianini.publish-on-central plugin version from 9.2.5 to 9.2.4.
• Add checkMavenCentralPortalPluginClasspath task (wired into tasks.check) that uploads to a local fake Maven Central Portal endpoint and records the deployment id.
• Add a small HttpExchange.respond helper for the local stub server.

Reviewed changes

Copilot reviewed 1 out of 2 changed files in this pull request and generated no comments.

File	Description
gradle/libs.versions.toml	Pins publishOnCentral plugin version to 9.2.4.
build.gradle.kts	Adds a verification task that starts a local HTTP server and calls PublishPortalDeployment.upload(...) during check.

[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 61.53%. Comparing base (e6c9647) to head (6592a35).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #5416   +/-   ##
=========================================
  Coverage     61.53%   61.53%           
  Complexity       14       14           
=========================================
  Files             2        2           
  Lines            78       78           
  Branches          4        4           
=========================================
  Hits             48       48           
  Misses           24       24           
  Partials          6        6           

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[DanySK]

🎉 This PR is included in version 43.1.4 🎉

The release is available on:

• 43.1.4
• GitHub release

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