Merge pull request jenkinsci#141 from jenkinsci/dependabot/github_actions/actions/checkout-3.0.1

Bump actions/checkout from 2.4.0 to 3.0.1

Author: Carroll Chiou

.github/workflows/cd.yaml

@@ -43,7 +43,7 @@ jobs:
     if: needs.validate.outputs.should_release == 'true'
     steps:
     - name: Check out
-      uses: actions/checkout@v2.4.0
+      uses: actions/checkout@v3.0.1
       with:
         fetch-depth: 0
     - name: Set up JDK 8