Update actions/checkout action to v4 (#23)

Author: nedtwigg

.github/workflows/changelog-print.yml

@@ -9,7 +9,7 @@ jobs:
     runs-on: ubuntu-latest
     name: changelogPrint
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: jdk 11
         uses: actions/setup-java@v4
         with:

.github/workflows/ci.yml

@@ -18,7 +18,7 @@ jobs:
     runs-on: ${{ matrix.os }}
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       - name: Install JDK ${{ matrix.jre }}
         uses: actions/setup-java@v4
         with:

.github/workflows/deploy.yml

@@ -33,7 +33,7 @@ jobs:
       ORG_GRADLE_PROJECT_gpg_passphrase: ${{ secrets.GPG_PASSPHRASE }}
       ORG_GRADLE_PROJECT_gpg_key64: ${{ secrets.GPG_KEY64 }}
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - name: jdk 11
         uses: actions/setup-java@v4
         with:

.github/workflows/gradle-wrapper-validation.yml

@@ -19,5 +19,5 @@ jobs:
     name: "Validation"
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@v3
+      - uses: actions/checkout@v4
       - uses: gradle/wrapper-validation-action@v1