Merge branch '37984-tune-hpa-targetaveragevalue-for-review-apps-sidekiq-and-unicorn' into 'master'

Tune `hpa.targetAverageValue` for Review Apps sidekiq and gitlab-shell

Closes #37984

See merge request gitlab-org/gitlab!21808

scripts/review_apps/base-config.yaml

@@ -44,7 +44,7 @@ gitlab:
         memory: 37.5M
     maxReplicas: 3
     hpa:
-      targetAverageValue: 130m
+      targetAverageValue: 500m
     deployment:
       livenessProbe:
         timeoutSeconds: 5
@@ -56,6 +56,8 @@ gitlab:
       limits:
         cpu: 975m
         memory: 1450M
+    hpa:
+      targetAverageValue: 650m
   task-runner:
     resources:
       requests: