chore: add OVSX_PAT to publish on open-vsx.org

[codecov[bot]]

Codecov Report

Merging #876 (05819f1) into main (0a7a837) will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #876   +/-   ##
=======================================
  Coverage   69.96%   69.96%           
=======================================
  Files          12       12           
  Lines        1838     1838           
  Branches      379      379           
=======================================
  Hits         1286     1286           
  Misses        552      552           

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[github-actions[bot]]

:tada: This PR is included in version 1.30.0 :tada:

The release is available on:

• Visual Studio Marketplace
• GitHub release

Your semantic-release bot :package::rocket: