Merge pull request #377 from OpenPrinting/dependabot/github_actions/actions/checkout-4.2.0

Bump actions/checkout from 4.1.7 to 4.2.0

Author: zdohnal

.github/workflows/differential-shellcheck.yml

@@ -16,7 +16,7 @@ jobs:
 
     steps: 
       - name: Repository checkout
-        uses: actions/checkout@692973e3d937129bcbf40652eb9f2f61becf3332
+        uses: actions/checkout@d632683dd7b4114ad314bca15554477dd762a938
         with:
           fetch-depth: 0