chore(deps): update actions/checkout action to v7

Author: renovate[bot]

.github/workflows/pull_request.yml

@@ -10,7 +10,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repo
-        uses: actions/checkout@v4.1.1
+        uses: actions/checkout@v7.0.1
         with:
           fetch-depth: 0 # important!
       - name: Cache Composer dependencies

.github/workflows/release.yml

@@ -12,7 +12,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v7
         with:
           fetch-depth: 0
           token: ${{ secrets.OBLAK_BOT_TOKEN }}