Update github action version

[another-rex]

Add a specific version to github action osv-scanner binary, and also append osv-scanner version to the default user agent.

[codecov-commenter]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (367c846) 79.54% compared to head (084176a) 79.54%.
Report is 1 commits behind head on main.

Files	Patch %	Lines
pkg/osvscanner/osvscanner.go	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #761   +/-   ##
=======================================
  Coverage   79.54%   79.54%           
=======================================
  Files          88       88           
  Lines        6091     6091           
=======================================
  Hits         4845     4845           
  Misses       1043     1043           
  Partials      203      203           

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