Bump canonical/has-signed-canonical-cla from 1.1.7 to 1.2.0 (#3668)

Bumps [canonical/has-signed-canonical-cla](https://github.com/canonical/has-signed-canonical-cla) from 1.1.7 to 1.2.0.
- [Release notes](https://github.com/canonical/has-signed-canonical-cla/releases)
- [Commits](canonical/has-signed-canonical-cla@1.1.7...1.2.0)

---
updated-dependencies:
- dependency-name: canonical/has-signed-canonical-cla
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/cla-check.yml

@@ -9,4 +9,4 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Check if CLA signed
-        uses: canonical/has-signed-canonical-cla@1.1.7
+        uses: canonical/has-signed-canonical-cla@1.2.0