Bump actions/checkout from 1.2.0 to 6.0.2

Bumps [actions/checkout](https://github.com/actions/checkout) from 1.2.0 to 6.0.2.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v1.2.0...de0fac2)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: 6.0.2
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

.github/workflows/copilot-setup-steps.yml

@@ -21,7 +21,7 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
 
       - name: Set up Flutter
         uses: subosito/flutter-action@0ca7a949e71ae44c8e688a51c5e7e93b2c87e295  # v2

.github/workflows/flutter.yml

@@ -10,7 +10,7 @@ jobs:
   test-main-code:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@ee0669bd1cc54295c223e0bb666b733df41de1c5  # v2
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - uses: actions/setup-java@b6e674f4b717d7b0ae3baee0fbe79f498905dfde  # v1
         with:
           java-version: "12.x"
@@ -24,7 +24,7 @@ jobs:
   test-android-integration:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - uses: actions/setup-java@c1e323688fd81a25caa38c78aa6df2d33d3e20d9  # v4
         with:
           java-version: "17"
@@ -39,7 +39,7 @@ jobs:
   test-ios-integration:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@34e114876b0b11c390a56381ad16ebd13914f8d5  # v4
+      - uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - uses: actions/setup-java@c1e323688fd81a25caa38c78aa6df2d33d3e20d9  # v4
         with:
           java-version: "17"

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: "Check-out"
-        uses: actions/checkout@50fbc622fc4ef5163becd7fab6573eac35f8462e  # v1
+        uses: actions/checkout@de0fac2e4500dabe0009e67214ff5f5447ce83dd  # v6.0.2
       - name: "Update Release CHANGELOG"
         id: update-release-changelog
         uses: heinrichreimer/github-changelog-generator-action@854576bb5274851427527d8199fba0061552dff5  # v2.2