Update all used Github Actions to a newer version

[nilsschmidt1337]

This issue is always open, since its always time to update:

• [x] actions/setup-java
• [x] actions/cache
• [x] mikepenz/action-junit-report (pinned to a commit to avoid supply chain attacks)
• ~nilsschmidt1337/[email protected]~ (my own fork, not in use anymore)
• [x] actions/checkout
• [x] actions/upload-artifact
• ~DuckSoft/[email protected]~ (not in use anymore)

[nilsschmidt1337]

Closed with commit 4d1c8c9.