[Request] Add OpenJDK 27 GA support #607

Current behavior

OpenJDK 27 is now GA, but the Java bucket does not yet provide an openjdk27 manifest and the rolling openjdk manifest still discovers JDK 26 through its current checkver configuration.

The existing openjdk manifest checks:

https://jdk.java.net/archive/

This causes a problem during the transition to a new GA release: JDK 27 is the current release and is available from https://jdk.java.net/27/, but it is not yet listed on the archive page.

For example, after updating the manifest data to JDK 27:

.\bin\checkver.ps1 openjdk27
openjdk27: couldn't match ... in https://jdk.java.net/archive/

.\bin\checkver.ps1 openjdk
openjdk: 26.0.2.1-1 (scoop version is 27-35) autoupdate available

So the archive-based check currently either fails for a version-specific JDK 27 manifest or detects JDK 26 for the rolling manifest.

Proposed change

Add OpenJDK 27 GA support by:

• adding bucket/openjdk27.json at version 27-35;
• updating the rolling bucket/openjdk.json to version 27-35;
• using the current JDK 27 release page as the checkver source while JDK 27 is the current GA release;
• retaining the existing captured-variable/autoupdate mechanism.

The Windows x64 GA artifact is:

https://download.java.net/java/GA/jdk27/55ce5470a6294008af0057ff4626d0e5/35/GPL/openjdk-27_windows-x64_bin.zip

SHA-256:

41172837168dd25a8d9fe5eb253ac1efc568c5f9ff608144bcacadfdf50f876c

Expected result

Users can install the current GA release with:

scoop install java/openjdk

or explicitly select JDK 27 with:

scoop install java/openjdk27

checkver.ps1 should also identify 27-35 rather than treating the latest archived JDK 26 release as an update.