build(deps): bump actions/checkout from 2 to 6

Bumps [actions/checkout](https://github.com/actions/checkout) from 2 to 6.
- [Release notes](https://github.com/actions/checkout/releases)
- [Changelog](https://github.com/actions/checkout/blob/main/CHANGELOG.md)
- [Commits](actions/checkout@v2...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>

Author: dependabot[bot]

.github/workflows/binaries.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout the repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           path: "prettier-java"
       - uses: actions/setup-node@v6
@@ -23,7 +23,7 @@ jobs:
           sudo apt install jq
           npm i -g pkg
       - name: Checkout Prettier
-        uses: actions/checkout@v2
+        uses: actions/checkout@v6
         with:
           repository: prettier/prettier
           ref: refs/tags/${{ env.PRETTIER_CORE_LIB_VERSION }}

.github/workflows/copyright-update.yml

@@ -17,7 +17,7 @@ jobs:
     timeout-minutes: 40
     steps:
       # Checkout
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v6
         with:
           ref: main
           fetch-depth: 0

.github/workflows/github-ci.yml

@@ -11,7 +11,7 @@ jobs:
           - 22.x
           - 24.x
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node_version }}
@@ -35,7 +35,7 @@ jobs:
           - e2e-jhipster2
         node_version: [24.x]
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
       - uses: actions/setup-node@v6
         with:
           node-version: ${{ matrix.node_version }}

.github/workflows/github-pages-deploy.yml

@@ -14,7 +14,7 @@ jobs:
     name: Build Docusaurus
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v6

.github/workflows/github-pages-test.yml

@@ -14,7 +14,7 @@ jobs:
     name: Build Docusaurus
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v4
+      - uses: actions/checkout@v6
         with:
           fetch-depth: 0
       - uses: actions/setup-node@v6