ci: beefier runners for heavier jobs

.gitlab-ci.yml

@@ -67,6 +67,8 @@ test-integration:
     - branches
   script:
     - VERBOSITY=debug make -C test test
+  tags:
+    - medium
 
 dependency-updates:
   stage: test
@@ -85,6 +87,8 @@ dependency-updates:
     # Note: The latest artifacts for refs are locked against deletion, and kept regardless of the expiry time.
     # Introduced in GitLab 13.0 behind a disabled feature flag, and made the default behavior in GitLab 13.4.
     expire_in: 1 day
+  tags:
+    - large
 
 build-linux:
   extends: .build-base