fix: always run govulncheck using go stable

Fixes: 420f7df (fix: ignore govulncheck for non-stable go version (#162))

.github/workflows/build.yml

@@ -22,15 +22,14 @@ on:
 
 jobs:
   govulncheck:
-    if: ${{ inputs.go_version == 'stable' || inputs.go-version == 'stable' }}
     runs-on: ubuntu-latest
     env:
       GH_PAT: ${{ secrets.gh_pat }}
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: ${{ inputs.go_version || inputs.go-version }}
+          go-version: stable
           cache: true
           check-latest: true
       - run: |