Bump actions/checkout from 5 to 6 in the github-actions group

Bumps the github-actions group with 1 update: [actions/checkout](https://github.com/actions/checkout).


Updates `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
  dependency-group: github-actions
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

.github/workflows/build.yml

@@ -19,7 +19,7 @@ jobs:
         with:
           xcode-version: ${{ matrix.xcode }}
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build and Test
         run: |
           # Set up a git user for the git tests
@@ -55,7 +55,7 @@ jobs:
       options: --cap-add=SYS_PTRACE --security-opt seccomp=unconfined --security-opt apparmor=unconfined
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build and Test
         run: |
           # Set up a git user for the git tests
@@ -83,7 +83,7 @@ jobs:
         with:
           swift-version: ${{ matrix.swift.version }}
           swift-build: ${{ matrix.swift.build }}
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - run: swift test
 
   command-line-tool:
@@ -101,7 +101,7 @@ jobs:
         with:
           xcode-version: ${{ matrix.xcode }}
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build Command Line Tool
         run: xcodebuild -project SwiftFormat.xcodeproj -scheme "SwiftFormat (Command Line Tool)" -sdk macosx clean build
 
@@ -120,7 +120,7 @@ jobs:
         with:
           xcode-version: ${{ matrix.xcode }}
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build Swift Format for Xcode app
         run: xcodebuild -project SwiftFormat.xcodeproj -scheme "SwiftFormat for Xcode" -sdk macosx clean build
 
@@ -139,7 +139,7 @@ jobs:
         with:
           xcode-version: ${{ matrix.xcode }}
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build Editor Extension
         run: xcodebuild -project SwiftFormat.xcodeproj -scheme "SwiftFormat (Editor Extension)" -sdk macosx clean build
 
@@ -158,7 +158,7 @@ jobs:
         with:
           xcode-version: ${{ matrix.xcode }}
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Run Regression Tests
         run: xcodebuild -project SwiftFormat.xcodeproj -scheme "Regression Tests" test
 
@@ -177,6 +177,6 @@ jobs:
         with:
           xcode-version: ${{ matrix.xcode }}
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Build Target
         run: xcodebuild -project SwiftFormat.xcodeproj -scheme "Performance Tests" build

.github/workflows/docker.yml

@@ -17,7 +17,7 @@ jobs:
 
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Extract metadata (tags, labels) for Docker
         id: meta

.github/workflows/notarize.yml

@@ -21,7 +21,7 @@ jobs:
           xcode-version: '16.3'
 
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.release.tag_name || inputs.tag }}
 
@@ -160,7 +160,7 @@ jobs:
     needs: [build-and-notarize]
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           ref: ${{ github.event.release.tag_name || inputs.tag }}
       - uses: actions/download-artifact@v5

.github/workflows/release.yml

@@ -8,7 +8,7 @@ jobs:
     runs-on: macos-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set Version Number
         run: echo "Using version number $GITHUB_REF_NAME" && sed -i '' "s/let swiftFormatVersion = \"[^\"]*\"/let swiftFormatVersion = \"$GITHUB_REF_NAME\"/" Sources/SwiftFormat.swift
       - name: Build macOS binary (arm64)
@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set Version Number
         run: echo "Using version number $GITHUB_REF_NAME" && sed -i "s/let swiftFormatVersion = \"[^\"]*\"/let swiftFormatVersion = \"$GITHUB_REF_NAME\"/" Sources/SwiftFormat.swift
       - name: Set up Docker Buildx
@@ -72,7 +72,7 @@ jobs:
     needs: [macos, linux]
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - uses: actions/download-artifact@v5
         with:
           path: downloaded_artifacts

.github/workflows/windows_release.yml

@@ -33,7 +33,7 @@ jobs:
           update-sdk-modules: true
 
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - shell: pwsh
         run: |
@@ -77,7 +77,7 @@ jobs:
     if: always()
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - uses: actions/download-artifact@v5
         with:
           path: downloaded-artifacts