ruby.yml in runger_actions-0.21.0

- old
+ new

@@ -10,11 +10,11 @@
 
 jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: ruby/setup-ruby@v1
       with:
         bundler-cache: true
     - name: Run RuboCop
       run: bin/rubocop --format clang
@@ -25,8 +25,9 @@
     - name: Ensure no git diff
       run: git diff --exit-code && git diff-index --quiet --cached HEAD
     - name: Ensure "## Unreleased" is in CHANGELOG.md
       run: grep "^## Unreleased" CHANGELOG.md
     - name: Upload Code Coverage
-      uses: codecov/codecov-action@v3
+      uses: codecov/codecov-action@v4
       with:
         directory: tmp/simple_cov
+        token: ${{ secrets.CODECOV_TOKEN }}