Update GitHub Actions checkout dependency

Author: paulrobertlloyd

.github/workflows/pull-request.yml

@@ -7,7 +7,7 @@ jobs:
     name: Sonar analysis
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v2
+    - uses: actions/checkout@v4
     - uses: actions/setup-node@v4
       with:
         node-version: 20

.github/workflows/release.yml

@@ -11,7 +11,7 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-      - uses: actions/checkout@v2
+      - uses: actions/checkout@v4
         with:
           persist-credentials: false