[chore] Update scala CLI and fix CLA check for dependabot (#23382)

Author: tgodzik

.github/workflows/cla.yml

@@ -6,6 +6,7 @@ on:
 jobs:
   check:
     runs-on: ubuntu-latest
+    if: github.event.pull_request.user.login != 'dependabot'
     steps:
       - name: Verify CLA
         uses: scala/cla-checker@v1

.github/workflows/lts-backport.yaml

@@ -16,7 +16,7 @@ jobs:
         with:
           fetch-depth: 0
       - uses: coursier/cache-action@v6
-      - uses: VirtusLab/scala-cli-setup@v1.8.0
+      - uses: VirtusLab/scala-cli-setup@v1.8.1
       - run: scala-cli ./project/scripts/addToBackportingProject.scala -- ${{ github.sha }}
         env:
           GRAPHQL_API_TOKEN: ${{ secrets.GRAPHQL_API_TOKEN }}