Update actions/checkout action to v4

.github/workflows/issues-labels-comments.yml

@@ -31,7 +31,7 @@ jobs:
   comment:
     runs-on: ubuntu-22.04
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - name: Label Commenter
         uses: peaceiris/actions-label-commenter@v1

.github/workflows/rebase.yml

@@ -25,7 +25,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the latest code
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
         with:
           token: ${{ secrets.GITHUB_TOKEN }}
           fetch-depth: 0 # otherwise, you will fail to push refs to dest repo

.github/workflows/release-labels.yml

@@ -28,7 +28,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - name: Checkout
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
 
     - name: Setup tools
       uses: ./.github/actions/tools

.github/workflows/size.yaml

@@ -24,7 +24,7 @@ jobs:
   update_labels:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
 
       - uses: actions-ecosystem/action-size@v2
         id: size