Update actions/checkout to v5.0.0

Author: nakamuuu

.github/workflows/create-release-pr.yml

@@ -4,7 +4,8 @@ jobs:
   job:
     runs-on: ubuntu-18.04
     steps:
-      - uses: actions/checkout@v2.3.4
+      - name: Checkout Code
+        uses: actions/checkout@v5.0.0
         with:
           fetch-depth: 0
       - name: Set up Ruby

.github/workflows/test.yml

@@ -5,7 +5,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v2
+        uses: actions/checkout@v5.0.0
         with:
           fetch-depth: 0
       - name: Run Unit Test