Focus linting for PR review to new changes (#37)

Author: piceri

.github/workflows/lint.yml

@@ -24,3 +24,5 @@ jobs:
           go-version-file: go.mod
       - name: golangci-lint
         uses: golangci/golangci-lint-action@1e7e51e771db61008b38414a730f564565cf7c20 # v9.2.0
+        with:
+          only-new-issues: ${{ github.event_name == 'pull_request' }}