Merge pull request #786 from amatsuda/checkout_v3

Fix CI warning

.github/workflows/check_changelog.yml

@@ -6,7 +6,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v1
+    - uses: actions/checkout@v3
     - name: Check that CHANGELOG is touched
       run: |
         cat $GITHUB_EVENT_PATH | jq .pull_request.title |  grep -i '\[\(\(changelog skip\)\|\(ci skip\)\)\]' ||  git diff remotes/origin/${{ github.base_ref }} --name-only | grep CHANGELOG.md

.github/workflows/ci.yml

@@ -23,7 +23,7 @@ jobs:
           - { ruby: head, experimental: true }
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1
         with:

.github/workflows/isolated.yml

@@ -8,7 +8,7 @@ jobs:
         ruby: [2.7]
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v3
 
       - name: Set up Ruby
         uses: ruby/setup-ruby@v1

.github/workflows/rubocop.yml

@@ -10,7 +10,7 @@ jobs:
         ruby: [2.7]
 
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v3
     - uses: actions/cache@v2
       with:
         path: /home/runner/bundle