Update GitHub Actions to use actions/checkout@v7 in release, sync-oha, and test workflows

Author: jaydrogers

.github/workflows/release.yml

@@ -22,7 +22,7 @@ jobs:
           - ubuntu-24.04-arm
     steps:
       - name: Checkout release tag
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           ref: ${{ github.event.release.tag_name }}
 

.github/workflows/sync-oha.yml

@@ -19,7 +19,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
 

.github/workflows/test.yml

@@ -22,7 +22,7 @@ jobs:
           - macos-15          # aarch64 macOS
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
 
       - name: Validate composer.json
         if: matrix.os == 'ubuntu-24.04'