Merge pull request #103 from MapServer/dependabot/github_actions/actions/checkout-4

Bump actions/checkout from 3 to 4

Author: jmckenna

.github/workflows/linux.yml

@@ -9,7 +9,7 @@ jobs:
     if: "!contains(github.event.head_commit.message, '[ci skip]') && !contains(github.event.head_commit.message, '[skip ci]')"
     steps:
       - name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
 
       - name: Build
         run: docker run --rm -e WORK_DIR=$PWD -v $PWD:$PWD ubuntu:20.04 $PWD/.github/workflows/linux.sh