chore(deps): update actions/checkout action to v6 (#2164)

Author: renovate-bot

.github/workflows/lint.yml

@@ -9,7 +9,7 @@ jobs:
   styles:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Install PHP
       uses: shivammathur/setup-php@v2
       with:
@@ -21,7 +21,7 @@ jobs:
   staticanalysis:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v4
+    - uses: actions/checkout@v6
     - name: Install PHP
       uses: shivammathur/setup-php@v2
       with: