Update go version to 1.22.1 to fix govulncheck warnings

[dashpole]

Fixes failure: https://github.com/GoogleCloudPlatform/opentelemetry-operations-go/actions/runs/8174426131/job/22349175299

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 59.93%. Comparing base (e16634a) to head (b6ced27).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #811      +/-   ##
==========================================
+ Coverage   59.79%   59.93%   +0.13%     
==========================================
  Files          56       56              
  Lines        5743     5743              
==========================================
+ Hits         3434     3442       +8     
+ Misses       2159     2151       -8     
  Partials      150      150              

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