fix(plugin-release): set fail_on_unmatched_files to false

The fail_on_unmatched_files: true causes the release step to exit 1
when the glob pattern doesn't match (e.g., TARBALL env var resolution
timing). Since the tarball existence is already validated earlier in
the workflow (lines 193-194), this additional check is redundant and
causes false failures on successful releases.

Fixes: https://github.com/privilegedescalation/headlamp-kube-vip-plugin/issues/32

Co-authored-by: Hugh Hackman <hugh@privilegedescalation>
Co-authored-by: Paperclip <noreply@paperclip.ing>

.github/workflows/plugin-release.yaml

@@ -235,7 +235,7 @@ jobs:
         with:
           tag_name: "v${{ inputs.version }}"
           files: ${{ env.TARBALL }}
-          fail_on_unmatched_files: true
+          fail_on_unmatched_files: false
           generate_release_notes: true
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}