chore(deps): pin opalmedapps/actions action to 9d20dc4

Author: renovate[bot]

.github/workflows/ci.yaml

@@ -20,7 +20,7 @@ permissions:
 
 jobs:
   lint:
-    uses: opalmedapps/actions/.github/workflows/prek.yaml@main
+    uses: opalmedapps/actions/.github/workflows/prek.yaml@9d20dc43687635178ec6bd4bd7a7cda5db481284 # main
     with:
       # run in test when testing the markdownlint workflow
       skip: markdownlint-cli2