fix(ci): widen resolve-dev-version search window for quiet main

[jhamon]

Summary

• Increases --limit from 10 to 100 in the resolve-dev-version job's gh run list call
• At hourly cadence, 100 candidates covers ~4 days of quiet main (no new commits → check-changes skip → success without artifact)
• Fixes false-positive CI failures when main is quiet for >~10 hours

Root cause

resolve-dev-version listed only the 10 most recent successful Dev Build & Publish runs. When main has had no new commits for >10 hours, all recent runs are no-op skips (check-changes gate completes as success without uploading a dev-version artifact). The resolver exhausted its 10-candidate window and errored as if the dev pipeline was broken. (CI-0061)

Verification

Release Readiness run on this branch with skip_integration=true:
https://github.com/pinecone-io/python-sdk/actions/runs/25576424039

Resolve latest dev wheel version job completed successfully. All wheel build jobs green.

---

Note

Low Risk
Low risk: only adjusts GitHub Actions workflow logic to scan more past successful runs, reducing false CI failures without touching product code.

Overview
Improves release-readiness robustness when main is quiet. The resolve-dev-version step now searches a larger set of recent successful dev-publish runs (limit 10 → 100) when looking for the dev-version artifact, and documents the rationale.

This prevents the workflow from failing when recent successful runs were no-op skips that didn’t upload the artifact.

^{Reviewed by Cursor Bugbot for commit 41c5c44. Bugbot is set up for automated code reviews on this repo. Configure here.}