chore(deps): bump actions/checkout from 5 to 6 (#221)

Author: dependabot[bot]

.github/workflows/ci-security.yaml

@@ -20,7 +20,7 @@ jobs:
         runs-on: ubuntu-latest
         steps:
             - name: Checkout code
-              uses: actions/checkout@v4
+              uses: actions/checkout@v6
             - name: Ensure SHA pinned actions
               uses: zgosalvez/github-actions-ensure-sha-pinned-actions@9e9574ef04ea69da568d6249bd69539ccc704e74 # v4.0.0
               with:

.github/workflows/ci.yml

@@ -12,7 +12,7 @@ jobs:
   build:
     runs-on: macos-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: 'Set up Java'
         uses: actions/setup-java@v5

.github/workflows/danger.yml

@@ -8,7 +8,7 @@ jobs:
     name: Changelog
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - run: npx danger ci

.github/workflows/publish.yml

@@ -14,7 +14,7 @@ jobs:
     runs-on: ubuntu-latest
     # use dart-lang/setup-dart/.github/workflows/publish.yml@v1 when https://github.com/dart-lang/setup-dart/issues/68 is fixed
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - uses: dart-lang/setup-dart@e51d8e571e22473a2ddebf0ef8a2123f0ab2c02c # v1.7.1
       - uses: subosito/flutter-action@fd55f4c5af5b953cc57a2be44cb082c8f6635e8e # v2.21.0
         with: