chore(deps): update actions/checkout action to v6 (#21243)

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

Author: renovate[bot]

.github/workflows/ci.yml

@@ -39,7 +39,7 @@ jobs:
 
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
         with:
           # Assume PRs are less than 50 commits
           fetch-depth: 50
@@ -75,7 +75,7 @@ jobs:
     name: "Build&Test: node-${{ matrix.node_version }}, ${{ matrix.os }}"
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0
@@ -157,7 +157,7 @@ jobs:
     name: "Build&Test: node-${{ matrix.node_version }}, ${{ matrix.os }} (js plugins)"
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@a7487c7e89a18df4991f7f222e4898a00d66ddda # v4.1.0
@@ -220,7 +220,7 @@ jobs:
     runs-on: ubuntu-latest
     name: "Lint: node-24, ubuntu-latest"
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0

.github/workflows/copilot-setup-steps.yml

@@ -14,7 +14,7 @@ jobs:
       contents: write
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0

.github/workflows/preview-release.yml

@@ -23,7 +23,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout code
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0

.github/workflows/publish.yml

@@ -18,7 +18,7 @@ jobs:
     environment: Release
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
 
       - name: Install pnpm
         uses: pnpm/action-setup@41ff72655975bd51cab0327fa583b6e92b6d3061 # v4.2.0

.github/workflows/release-tag.yml

@@ -16,7 +16,7 @@ jobs:
     permissions:
       contents: write # for yyx990803/release-tag to create a release tag
     steps:
-      - uses: actions/checkout@v5
+      - uses: actions/checkout@v6
 
       - name: Get pkgName for tag
         id: tag

docs/guide/static-deploy-github-pages.yaml

@@ -33,7 +33,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v5
+        uses: actions/checkout@v6
       - name: Set up Node
         uses: actions/setup-node@v6
         with: