fix(ci): process older issues first

[anshbansal]

We are not processing older issues because of some limits https://github.com/actions/stale#operations-per-run. It makes more sense to process in ascending order so older things are processed first.

Checklist

• The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• Links to related issues (if applicable)
• Tests for the changes have been added/updated (if applicable)
• Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[github-actions]

Unit Test Results (build & test)

571 tests  ±0   571 ✔️ ±0   14m 17s ⏱️ -46s
141 suites ±0       0 💤 ±0 
141 files   ±0       0 ❌ ±0 

Results for commit 3c40faa. ± Comparison against base commit aa93a34.

[treff7es]

lgtm