Bump actions/checkout from 3 to 4 (#207)

Author: dependabot[bot]

.github/workflows/CD.yml

@@ -11,7 +11,7 @@ jobs:
     steps:
       - name: Set environment for version
         run: long="${{ github.ref }}"; version=${long#"refs/tags/v"}; echo "version=${version}" >> $GITHUB_ENV
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: Homebrew/actions/setup-homebrew@master
         id: set-up-homebrew
       - uses: actions/setup-java@v3

.github/workflows/CI.yml

@@ -16,7 +16,7 @@ jobs:
         os: [ 'ubuntu-latest', 'macos-latest' ]
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: Homebrew/actions/setup-homebrew@master
         id: set-up-homebrew
       - run: brew install libpq

.github/workflows/Docs.yml

@@ -26,7 +26,7 @@ jobs:
 
     steps:
       - uses: actions/configure-pages@v3
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: Homebrew/actions/setup-homebrew@master
         id: set-up-homebrew
       - run: brew install libpq

.github/workflows/gradleWrapper.yml

@@ -14,5 +14,5 @@ jobs:
       contents: read
 
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1