[release] Core stable release 1.11.2 updates

[opentelemetrybot]

Note: This PR was opened automatically by the post-release workflow.

Merge once packages are available on NuGet and the build passes.

Changes

• Sets OTelLatestStableVer in Directory.Packages.props to 1.11.2.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 86.30%. Comparing base (2ea6e04) to head (af14c71).
Report is 2 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6169   +/-   ##
=======================================
  Coverage   86.30%   86.30%           
=======================================
  Files         257      257           
  Lines       11499    11499           
=======================================
  Hits         9924     9924           
  Misses       1575     1575