chore(deps): update github-actions (major)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
kentaro-m/auto-assign-action	action	major	v1.2.6 -> v2.0.0
magnetikonline/action-golang-cache	action	major	v4 -> v5

---

Configuration

📅 Schedule: Branch creation - "before 4am on Monday" (UTC), Automerge - At any time (no schedule defined).

🚦 Automerge: Enabled.

♻ Rebasing: Whenever PR is behind base branch, or you tick the rebase/retry checkbox.

👻 Immortal: This PR will be recreated if closed unmerged. Get config help if that's undesired.

---

• If you want to rebase/retry this PR, check this box

---

This PR has been generated by Mend Renovate. View repository job log here.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 40.41%. Comparing base (06d88a4) to head (ea00838).
Report is 117 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #135      +/-   ##
==========================================
- Coverage   42.50%   40.41%   -2.10%     
==========================================
  Files          15        7       -8     
  Lines        1228      725     -503     
==========================================
- Hits          522      293     -229     
+ Misses        658      401     -257     
+ Partials       48       31      -17     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.