chore(deps): bump actions/checkout from 5 to 6 (#1418)

Bumps [actions/checkout](https://github.com/actions/checkout) from 5 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v5...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] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

.github/workflows/bump_templates.yaml

@@ -10,7 +10,7 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: dart-lang/setup-dart@v1
         with:

.github/workflows/e2e.yaml

@@ -46,7 +46,7 @@ jobs:
 
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: 🐦 Setup Flutter
         uses: subosito/flutter-action@v2

.github/workflows/pub_publish.yaml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: 🎯 Setup Dart
         uses: dart-lang/setup-dart@v1
         with:

.github/workflows/site.yaml

@@ -22,7 +22,7 @@ jobs:
 
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: ⚙️ Setup Node
         uses: actions/setup-node@v6

.github/workflows/site_deploy.yaml

@@ -16,7 +16,7 @@ jobs:
 
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: ⚙️ Setup Node
         uses: actions/setup-node@v6

.github/workflows/spdx_license.yaml

@@ -31,7 +31,7 @@ jobs:
     # https://github.com/VeryGoodOpenSource/very_good_workflows/issues/150
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: 🎯 Setup Dart
         uses: dart-lang/setup-dart@v1
@@ -66,7 +66,7 @@ jobs:
 
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: 🎯 Setup Dart
         uses: dart-lang/setup-dart@v1

.github/workflows/spdx_license_bot.yaml

@@ -18,7 +18,7 @@ jobs:
 
     steps:
       - name: 📚 Git Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: 🎯 Setup Dart
         uses: dart-lang/setup-dart@v1

.github/workflows/sync_labels.yaml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-20.04
     steps:
       - name: ⤵️ Check out code from GitHub
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: 🚀 Run Label Sync
         uses: srealmoreno/label-sync-action@v2

.github/workflows/test_optimizer.yaml

@@ -28,7 +28,7 @@ jobs:
   verify_bundle:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: dart-lang/setup-dart@v1
         with:

.github/workflows/very_good_cli.yaml

@@ -16,7 +16,7 @@ jobs:
     runs-on: ${{ matrix.os }}
 
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - uses: subosito/[email protected]
         with: