Bump actions/checkout from 4 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 4 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](https://github.com/actions/checkout/compare/v4...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

.github/workflows/build-onpremise.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: "Check out code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Required for WyriHaximus/github-action-get-previous-tag
 
@@ -96,7 +96,7 @@ jobs:
           node-version: '20.x'
 
       - name: "Checkout invoicing extension"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           repository: solidtime-io/extension-invoicing
           path: extensions/Invoicing

.github/workflows/build-private.yml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: "Check out code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Required for WyriHaximus/github-action-get-previous-tag
 
@@ -73,7 +73,7 @@ jobs:
           node-version: '20.x'
 
       - name: "Checkout billing extension"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: solidtime-io/extension-billing
           path: extensions/Billing
@@ -93,7 +93,7 @@ jobs:
         run: cd extensions/Billing && npm ci
 
       - name: "Checkout services extension"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: solidtime-io/extension-services
           path: extensions/Services
@@ -111,7 +111,7 @@ jobs:
         run: cd extensions/Services && npm ci
 
       - name: "Checkout invoicing extension"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           repository: solidtime-io/extension-invoicing
           path: extensions/Invoicing

.github/workflows/build-public.yml

@@ -36,7 +36,7 @@ jobs:
 
     steps:
       - name: "Check out code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0 # Required for WyriHaximus/github-action-get-previous-tag
 

.github/workflows/generate-api-docs.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Setup PHP"
         uses: shivammathur/setup-php@v2

.github/workflows/npm-build.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Setup PHP (for Ziggy)"
         uses: shivammathur/setup-php@v2

.github/workflows/npm-format-check.yml

@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Use Node.js"
         uses: actions/setup-node@v6

.github/workflows/npm-lint.yml

@@ -11,7 +11,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Use Node.js"
         uses: actions/setup-node@v6

.github/workflows/npm-publish-api.yml

@@ -11,7 +11,7 @@ jobs:
       id-token: write
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       # Setup .npmrc file to publish to npm
       - name: Install root project dependencies
         run: npm ci

.github/workflows/npm-publish-ui.yml

@@ -11,7 +11,7 @@ jobs:
       id-token: write
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       # Setup .npmrc file to publish to npm
       - uses: actions/setup-node@v6
         with:

.github/workflows/npm-typecheck.yml

@@ -10,7 +10,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Setup PHP (for Ziggy)"
         uses: shivammathur/setup-php@v2

.github/workflows/phpstan.yml

@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Setup PHP"
         uses: shivammathur/setup-php@v2

.github/workflows/phpunit.yml

@@ -36,7 +36,7 @@ jobs:
           --health-retries 5
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Setup PHP"
         uses: shivammathur/setup-php@v2

.github/workflows/pint.yml

@@ -9,7 +9,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Check code style"
         uses: aglipanci/laravel-pint-action@2.6

.github/workflows/playwright.yml

@@ -35,7 +35,7 @@ jobs:
 
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: "Setup node"
         uses: actions/setup-node@v6
@@ -99,7 +99,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Checkout code"
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: "Setup node"
         uses: actions/setup-node@v4