ci: Allow release: [version] as release PR title

[Mrtenz]

This updates MetaMask/action-is-release to v2 which supports multiple commit titles for releases. I've added support for the following, in addition to the current "Release [version]":

• Release [version]
• release: [version]
• release: [version]

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.80%. Comparing base (ad1aa95) to head (a9bf655).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3329   +/-   ##
=======================================
  Coverage   97.80%   97.80%           
=======================================
  Files         364      364           
  Lines        9911     9911           
  Branches     1616     1616           
=======================================
  Hits         9693     9693           
  Misses        218      218           

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

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.