Merge pull request #54 from codecov/update-to-v4

chore(ci): upgrade to v4

Author: thomasrockhu-codecov

.github/workflows/ruby-standard-2.yml

@@ -28,7 +28,7 @@ jobs:
           bundle install
           bundle exec rspec
       - name: Upload to Codecov
-        uses: codecov/codecov-action@v4-beta
+        uses: codecov/codecov-action@v4
         env:
           CODECOV_TOKEN: ${{ secrets.CODECOV_ORG_TOKEN }}
         with: