feat(deps): update Java deps to openjdk-25-jre and add Ubuntu 26.04 support

[dgibbs64]

Description

Updates all Java game server dependencies to openjdk-25-jre on distros that ship it natively, and adds Ubuntu 26.04 support.

Changes

• ubuntu-24.04: update pz, rw, wmc to openjdk-25-jre (mc, pmc, vpmc already updated)
• debian-13: update vpmc to openjdk-25-jre; fix wmc package name typo (openjdk21-jre → openjdk-25-jre)
• ubuntu-26.04: new CSV based on ubuntu-24.04 with all Java deps on openjdk-25-jre

Notes

• openjdk-25-jre (non-headless) is used throughout. PaperMC docs explicitly warn against -headless variants as they are missing required dependencies.
• Older distros (ubuntu-20.04/22.04/23.x, debian-10/11/12) do not ship openjdk-25 in their official repos and are unchanged.

Type of change

• Bug fix (debian-13 wmc typo)
• New feature (Ubuntu 26.04 support, Java 25 dep updates)

Checklist

• This pull request links to an issue.
• This pull request uses the develop branch as its base.
• This pull request subject follows the Conventional Commits standard.
• This code follows the style guidelines of this project.
• I have performed a self-review of my code.
• I have checked that this code is commented where required.
• I have provided a detailed enough description of this PR.
• I have checked if documentation needs updating.