Update plugin parent POM

[basil]

I have been attempting to run PCT tests in jenkinsci/bom against Java 17 and newer versions of PCT, and this plugin is running into failures because its parent POM is too old. This PR updates the parent POM to the latest build toolchain from jenkinsci/analysis-pom-plugin#446 to facilitate Java 17 compatibility testing and PCT updates in jenkinsci/bom.

[basil]

The GitHub Actions failures here are not my fault, as this plugin uses a version of Checkstyle that requires Java 11 but has GitHub Actions configured to run with Java 8.

[basil]

jenkinsci/analysis-pom-plugin#420 should be reverted.

[uhafner]

I think we should move to JDK11 when building the plugins. I converted all of my active plugins (that depend on analysis-pom) to use JDK 11 quite some time ago.

[basil]

Done in commit 84b9587

[codecov]

Codecov Report

Merging #163 (a801f67) into master (8b8b9c7) will not change coverage.
The diff coverage is n/a.

@@            Coverage Diff            @@
##             master     #163   +/-   ##
=========================================
  Coverage     85.38%   85.38%           
  Complexity      152      152           
=========================================
  Files            17       17           
  Lines           746      746           
  Branches         57       57           
=========================================
  Hits            637      637           
  Misses           89       89           
  Partials         20       20           

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[basil]

Build is now green.

[basil]

Thank you! A release of this would facilitate Java 17 PCT testing.