chore(deps): bump gitpod/workspace-java-21 from 2025-06-18-16-47-14 to 2025-08-25-18-17-39 (#6523)

chore(deps): bump gitpod/workspace-java-21

Bumps gitpod/workspace-java-21 from 2025-06-18-16-47-14 to 2025-08-25-18-17-39.

---
updated-dependencies:
- dependency-name: gitpod/workspace-java-21
  dependency-version: 2025-08-25-18-17-39
  dependency-type: direct:production
...

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