Fix CI - Regenerate proto files, and selective msrv-patching

[lalitb]

Changes

• Ensure msrv-patch script is selectively executed depending on the rust and crate version.
• Regenerate proto files, for tonic/prost update.

Please provide a brief description of the changes here.

Merge requirement checklist

• CONTRIBUTING guidelines followed
• Unit tests added/updated (if applicable)
• Appropriate CHANGELOG.md files updated for non-trivial, user-facing changes
• Changes in public API reviewed (if applicable)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.0%. Comparing base (161929d) to head (618821f).
Report is 1 commits behind head on main.

Additional details and impacted files

@@          Coverage Diff          @@
##            main   #2159   +/-   ##
=====================================
  Coverage   79.0%   79.0%           
=====================================
  Files        121     121           
  Lines      20933   20933           
=====================================
  Hits       16549   16549           
  Misses      4384    4384           

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[lalitb]

This should be good to review/approve now.