[obs] Add back critical regular not active alerts

Related to ENG-15

Now that we have related data, we should resume triggering alerts if the data condition occurs.

Author: kylos101

operations/observability/mixins/workspace/rules/satellite/workspaces.yaml

@@ -21,7 +21,7 @@ spec:
     rules:
     - alert: GitpodWorkspaceTooManyRegularNotActiveMk2
       labels:
-        severity: warning
+        severity: critical
       for: 10m
       annotations:
         runbook_url: https://github.com/gitpod-io/runbooks/blob/main/runbooks/GitpodWorkspaceTooManyRegularNotActive.md
@@ -34,7 +34,7 @@ spec:
 
     - alert: GitpodWorkspacesNotStartingMk2
       labels:
-        severity: warning
+        severity: critical
       for: 10m
       annotations:
         runbook_url: https://github.com/gitpod-io/runbooks/blob/main/runbooks/GitpodWorkspaceNotStarting.md