.gitlab-ci.yml: Move from license-management to license-scanning

The former is removed in gitlab 13.0. Effective now.

More info at https://docs.gitlab.com/ee/user/compliance/license_compliance/#migration-from-license_management-to-license_scanning
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 70be802..fa86041 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -1,6 +1,6 @@
 include:
   - template: Code-Quality.gitlab-ci.yml
-  - template: License-Management.gitlab-ci.yml
+  - template: License-Scanning.gitlab-ci.yml
   - template: SAST.gitlab-ci.yml
 
 image: registry.gitlab.com/buildstream/buildstream-docker-images/testsuite-debian:10-${DOCKER_IMAGE_VERSION}