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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -17,7 +17,7 @@ jobs:
   SwiftLint:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: GitHub Action for SwiftLint
         uses: norio-nomura/action-swiftlint@3.2.1
         with:
@@ -47,7 +47,7 @@ jobs:
             runsOn: macos-13
             name: "macOS 13, Xcode 14.3.1, Swift 5.8.0"
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: ${{ matrix.name }}
         run: xcodebuild test -scheme "Log" -destination "platform=macOS" clean -enableCodeCoverage YES -resultBundlePath "test_output/${{ matrix.name }}.xcresult" || exit 1
       - name: Upload test coverage reports to Codecov
@@ -88,7 +88,7 @@ jobs:
             xcode: "Xcode_14.3.1"
             runsOn: macos-13
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: ${{ matrix.name }}
         run: xcodebuild test -scheme "Log" -destination "${{ matrix.destination }}" clean -enableCodeCoverage YES -resultBundlePath "test_output/${{ matrix.name }}.xcresult" || exit 1
       - name: Upload test coverage reports to Codecov
@@ -129,7 +129,7 @@ jobs:
             xcode: "Xcode_14.3.1"
             runsOn: macos-13
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: ${{ matrix.name }}
         run: xcodebuild test -scheme "Log" -destination "${{ matrix.destination }}" clean -enableCodeCoverage YES -resultBundlePath "test_output/${{ matrix.name }}.xcresult" || exit 1
       - name: Upload test coverage reports to Codecov
@@ -170,7 +170,7 @@ jobs:
             xcode: "Xcode_14.3.1"
             runsOn: macos-13
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: ${{ matrix.name }}
         run: xcodebuild test -scheme "Log" -destination "${{ matrix.destination }}" clean -enableCodeCoverage YES -resultBundlePath "test_output/${{ matrix.name }}.xcresult" || exit 1
       - name: Upload test coverage reports to Codecov
@@ -203,7 +203,7 @@ jobs:
             xcode: "Xcode_14.3.1"
             runsOn: macos-13
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
       - name: ${{ matrix.name }}
         run: swift build -c release
 
@@ -228,7 +228,7 @@ 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"