Bump scala-cli-setup GH action to 1.5.1

Author: Gedochao

.github/workflows/lts-backport.yaml

@@ -15,7 +15,7 @@ jobs:
         with:
           fetch-depth: 0
       - uses: coursier/cache-action@v6
-      - uses: VirtusLab/[email protected].0
+      - uses: VirtusLab/[email protected].1
       - run: scala-cli ./project/scripts/addToBackportingProject.scala -- ${{ github.sha }}
         env:
           GRAPHQL_API_TOKEN: ${{ secrets.GRAPHQL_API_TOKEN }}