Upgrade: 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](actions/checkout@v3...v4)

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

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

.github/workflows/build-docusaurus.yml

@@ -21,7 +21,7 @@ jobs:
           - { version: "18.13.0" }
 
     steps:
-      - uses: actions/checkout@v3.5.2
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           java-version: ${{ matrix.scala.java-version }}

.github/workflows/build.yml

@@ -23,7 +23,7 @@ jobs:
           - { name: "Scala 3", version: "3.1.3",   binary-version: "3",    java-version: "[email protected]" }
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: olafurpg/setup-scala@v14
         with:
           java-version: ${{ matrix.scala.java-version }}

.github/workflows/manual-build.yml

@@ -32,7 +32,7 @@ jobs:
           }
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: olafurpg/setup-scala@v14
         with:
           java-version: ${{ matrix.scala.java-version }}

.github/workflows/manual-publish-github-pages.yml

@@ -17,7 +17,7 @@ jobs:
           - { version: "18.13.0" }
 
     steps:
-      - uses: actions/checkout@v3.5.2
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           java-version: ${{ matrix.scala.java-version }}

.github/workflows/manual-publish.yml

@@ -34,7 +34,7 @@ jobs:
           }
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: olafurpg/setup-scala@v14

.github/workflows/release.yml

@@ -17,7 +17,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: olafurpg/setup-scala@v14