Update canonical/has-signed-canonical-cla action to v2 (#83)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

.github/workflows/cla-check.yml

@@ -6,4 +6,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check if CLA signed
-        uses: canonical/has-signed-canonical-cla@v1
+        uses: canonical/has-signed-canonical-cla@v2