chore(deps): Bump actions/checkout from 5 to 6 (#399)

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to
6.

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -12,7 +12,7 @@ jobs:
     name: Check composer.json
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: shivammathur/setup-php@v2
         with:
@@ -25,7 +25,7 @@ jobs:
     name: Analyse code
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: shivammathur/setup-php@v2
         with:
@@ -50,7 +50,7 @@ jobs:
           - php: 8.1
             composer-flags: "--with=symfony/yaml:^6.4"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: shivammathur/setup-php@v2
         with:

.github/workflows/lint-actions.yml

@@ -14,7 +14,7 @@ jobs:
   check_actions:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: reviewdog/action-actionlint@v1
         with:

.github/workflows/update.yml

@@ -70,7 +70,7 @@ jobs:
               core.setOutput('commit_branch', newBranch)
             }
 
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           ref: ${{ steps.check-existing-pr.outputs.checkout_branch }}
           persist-credentials: 'false'