Resolve "Update core framework Sprint Boot to latest version 3.4.x"

Related issues

Update core framework Sprint Boot to latest version 3.4.1

Acceptance criteria

• Implemented code changes don't diverge from the related issue.
• Documentation reflects the status quo after merge.
• Version number is incremented according to SemVer. (Snapshot versions are not merged/released.)
• Only released versions of dependencies are used (i.e. no snapshot versions).
• Pipeline still works.
• GitLab issue is up-to-date.

Proposed squash commit message

Update core framework Sprint Boot to version 3.4.1 (latest)

Closes #95 (closed)