Upgrade JDKs used by GitHub Actions builds

[Stephan202]

Suggested commit message:

Upgrade JDKs used by GitHub Actions builds (#1609)

Summary of changes:
- Use JDK 17.0.15 instead of 17.0.13.
- Use JDK 21.0.7 instead of 21.0.5.
- Use JDK 24.0.1 instead of 23.0.1.
- Have GitHub issue template reference more recent version numbers.

See:
- https://adoptium.net/temurin/release-notes/?version=jdk-17.0.14+7
- https://adoptium.net/temurin/release-notes/?version=jdk-17.0.15+6
- https://adoptium.net/temurin/release-notes/?version=jdk-21.0.6+7
- https://adoptium.net/temurin/release-notes/?version=jdk-21.0.7+6
- https://adoptium.net/temurin/release-notes/?version=jdk-24+36
- https://adoptium.net/temurin/release-notes/?version=jdk-24.0.1+9

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[Stephan202]

The build isn't yet JDK 24-compatible, IIUC because OpenRewrite uses Lombok, while the used version of Lombok isn't compatible with JDK 24: projectlombok/lombok#3772.

CC @timtebeek.

NB: The referenced OpenRewrite code seems to treat Lombok as an optional dependency, but as we don't otherwise depend on Lombok, should this code path be taken at all? 🤔

[timtebeek]

It looks like the folks at Lombok are working on a release right now, based the comments here:

• [FEATURE] Release Java 24 Compatibility to maven central projectlombok/lombok#3847 (comment)
• projectlombok/lombok@f158f2c
• https://projectlombok.org/download-edge

Once that's available from Maven Central I think it should be easy for us to put out a new patch release using that particular version, if needed.

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[Stephan202]

The build now fails due to openrewrite/rewrite-templating#118 / openrewrite/rewrite#4768; the top-level issue to track is openrewrite/rewrite#5211.

[github-actions]

Looks good. No mutations were possible for these changes.
Mutation testing report by Pitest. Review any surviving mutants by inspecting the line comments under Files changed.

[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

[Stephan202]

Bumped JDK versions; new release notes not yet available.

[timtebeek]

Java 24 support has been merged on our side and will go out early next week in a new release.