Bump the Aspire repository version

The product version is defined in the first property group of eng/Versions.props. Keep the target branch's automatic milestone assignment aligned in .github/policies/milestoneAssignment.prClosed.yml. Do not replace every occurrence of the old version throughout the repository.

Inspect the target and history

1. Establish the requested version and target branch. Interpret X.Y as X.Y.0. Ask if the target version is missing; do not infer it from the calendar or SDK.
2. Read the working-tree status and preserve unrelated changes. Use the current session branch and follow any app-managed branch naming requirements.
3. Read both files and inspect previous bumps, including their complete diffs so related automation changes are not missed: