Bump JDK to version 25 (#4031)

* first draft for JDK 25 migration (including comments)

* fix unresolvable version in setup-java action

* switch to official `openjdk-25-jdk` ubuntu package

see https://packages.ubuntu.com/search?suite=jammy&arch=any&searchon=names&keywords=openjdk-25

* update jacoco to support JDK 25

* use jdk 25.0.1 for building the app

# Conflicts:
#	.github/workflows/win-exe.yml

* Use correct SHA256 value for openjfx linux arm64

* zulu version is different to temurin :rolling_eyes:

* fix check-jdk-updates

---------

Co-authored-by: Armin Schrenk <armin.schrenk@skymatic.de>

.github/workflows/win-exe.yml

@@ -47,8 +47,8 @@ jobs:
         include:
           - arch: x64
             os: windows-latest
-            java-dist: 'zulu'
-            java-version: '24.0.1+9'
+            java-dist: 'zulu' #cannot use temurin, see https://github.com/cryptomator/cryptomator/issues/3824#issuecomment-2829827427
+            java-version: '25.0.1+8'
             java-package: 'jdk'
     steps:
       - uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5.0.0