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] <support@github.com>

.github/workflows/build.yml

@@ -16,7 +16,7 @@ jobs:
           - { binary-version: "2.12", java-version: "adopt@1.8" }
 
     steps:
-    - uses: actions/checkout@v3
+    - uses: actions/checkout@v4
     - uses: olafurpg/setup-scala@v14
       with:
         java-version: ${{ matrix.scala.java-version }}

.github/workflows/doc-site-build-only.yml

@@ -18,7 +18,7 @@ jobs:
           - { version: "16.16.0" }
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           java-version: ${{ matrix.scala.java-version }}

.github/workflows/doc-site-publish.yml

@@ -17,7 +17,7 @@ jobs:
           - { version: "16.16.0" }
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: actions/setup-java@v3
         with:
           java-version: ${{ matrix.scala.java-version }}

.github/workflows/release.yml

@@ -15,7 +15,7 @@ jobs:
 
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: olafurpg/setup-scala@v14
         with:
           java-version: ${{ env.GH_JAVA_VERSION }}
@@ -48,7 +48,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
         with:
           fetch-depth: 0
       - uses: olafurpg/setup-scala@v14