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

Bumps [actions/checkout](https://github.com/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](https://github.com/actions/checkout/compare/v5...v6)

---
updated-dependencies:
- dependency-name: actions/checkout
  dependency-version: '6'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/doc.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Node.js
         uses: actions/setup-node@v6
@@ -47,7 +47,7 @@ jobs:
           - ubuntu-latest
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Go
         uses: ./.github/actions/setup-go
@@ -84,7 +84,7 @@ jobs:
           - ubuntu-latest
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Go
         uses: actions/setup-go@v6
@@ -136,7 +136,7 @@ jobs:
           - ubuntu-latest
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Go
         uses: actions/setup-go@v6

.github/workflows/fmt.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ubuntu-latest
     timeout-minutes: 30
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Set up Go
         uses: ./.github/actions/setup-go

.github/workflows/go.yml

@@ -28,7 +28,7 @@ jobs:
         llvm: [19]
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         uses: ./.github/actions/setup-deps
         with:

.github/workflows/llgo.yml

@@ -46,7 +46,7 @@ jobs:
         go: ["1.21.13", "1.22.12", "1.23.6", "1.24.2"]
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         uses: ./.github/actions/setup-deps
         with:
@@ -166,7 +166,7 @@ jobs:
         go: ["1.24.2"]
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         uses: ./.github/actions/setup-deps
         with:
@@ -212,7 +212,7 @@ jobs:
         go: ["1.21.13", "1.22.12", "1.23.6", "1.24.2"]
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         uses: ./.github/actions/setup-deps
         with:
@@ -270,7 +270,7 @@ jobs:
         llvm: [19]
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         uses: ./.github/actions/setup-deps
         with:

.github/workflows/release-build.yml

@@ -21,7 +21,7 @@ jobs:
       linux-cache-key: ${{ steps.cache-keys.outputs.linux-key }}
     steps:
       - name: Check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Calculate cache keys
         id: cache-keys
         run: |
@@ -33,7 +33,7 @@ jobs:
     timeout-minutes: 30
     steps:
       - name: Check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Check Linux sysroot cache
         id: cache-linux-sysroot
         uses: actions/cache/restore@v4
@@ -63,7 +63,7 @@ jobs:
     needs: [setup, populate-linux-sysroot]
     steps:
       - name: Check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Release
         uses: ./.github/actions/setup-goreleaser
         with:
@@ -148,7 +148,7 @@ jobs:
             go-mod-version: "1.24"
     runs-on: ${{ matrix.os }}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         uses: ./.github/actions/setup-deps
         with:
@@ -184,7 +184,7 @@ jobs:
     if: startsWith(github.ref, 'refs/tags/')
     steps:
       - name: Check out code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - name: Set up Release

.github/workflows/targets.yml

@@ -26,7 +26,7 @@ jobs:
         llvm: [19]
     runs-on: ${{matrix.os}}
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
       - name: Install dependencies
         uses: ./.github/actions/setup-deps
         with: