chore(deps): update actions/checkout action to v6 (#28)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
   SwiftLint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: GitHub Action for SwiftLint
         uses: norio-nomura/action-swiftlint@3.2.1
         with:
@@ -39,7 +39,7 @@ jobs:
             xcode: "Xcode_16.1"
             runsOn: macOS-14
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: ${{ matrix.name }}
         run: xcodebuild test -scheme "flex-ui" -destination "${{ matrix.destination }}" clean -enableCodeCoverage YES -resultBundlePath "test_output/${{ matrix.name }}.xcresult" || exit 1
       - uses: actions/upload-artifact@v5
@@ -53,7 +53,7 @@ jobs:
     env:
       DEVELOPER_DIR: /Applications/Xcode_14.1.app/Contents/Developer
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - name: Discover typos
         run: |
           export PATH="$PATH:/Library/Frameworks/Python.framework/Versions/3.11/bin"

.github/workflows/danger.yml

@@ -18,7 +18,7 @@ jobs:
           ruby-version: 3.1.4
           bundler-cache: true
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
       - name: Setup gems
         run: |
           gem install bundler