Bump azure/login from 1 to 2 in /.github/workflows (#14)

Bumps [azure/login](https://github.com/azure/login) from 1 to 2.
- [Release notes](https://github.com/azure/login/releases)
- [Commits](Azure/login@v1...v2)

---
updated-dependencies:
- dependency-name: azure/login
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

.github/workflows/testing.yml

@@ -42,7 +42,7 @@ jobs:
         run: terraform validate
 
       - name: "Az CLI login"
-        uses: azure/login@v1
+        uses: azure/login@v2
         with:
           tenant-id: ${{ secrets.ARM_TENANT_ID }}
           client-id: ${{ secrets.ARM_CLIENT_ID }}