Bump actions/checkout from 3 to 4

Bumps [actions/checkout](https://github.com/actions/checkout) from 3 to 4.
- [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/v3...v4)

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

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

.github/workflows/build.yaml

@@ -13,7 +13,7 @@ jobs:
     steps:
       - run: git config --global user.name "${{ vars.KOKUWA_IO_BOT_NAME }}"
       - run: git config --global user.email "${{ vars.KOKUWA_IO_BOT_EMAIL }}"
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           token: ${{ secrets.GIT_ACTION_TOKEN }}
       - uses: actions/setup-java@v3

.github/workflows/pr.yaml

@@ -7,7 +7,7 @@ jobs:
   yaml:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: ibiqlik/action-yamllint@v3
         with:
           format: colored
@@ -16,7 +16,7 @@ jobs:
   markdown:
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: avto-dev/markdown-lint@v1
         with:
           args: /github/workspace
@@ -26,7 +26,7 @@ jobs:
     env:
       MAVEN_ARGS: --batch-mode --color=always --no-transfer-progress -Dmaven.test.redirectTestOutputToFile=false
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           distribution: temurin

.github/workflows/release.yaml

@@ -10,7 +10,7 @@ jobs:
     steps:
       - run: git config --global user.name "${{ vars.KOKUWA_IO_BOT_NAME }}"
       - run: git config --global user.email "${{ vars.KOKUWA_IO_BOT_EMAIL }}"
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           token: ${{ secrets.GIT_ACTION_TOKEN }}
       - uses: crazy-max/ghaction-import-gpg@v5