CHORE(resources): set memory limits equal to memory requests

Align memory limits with memory requests for guaranteed QoS class.
- prometheus, thanos (query, storegateway, compactor)
- alertmanager, tempo, goldilocks (dashboard, controller)
- node-exporter, opentelemetry-collector, vpa, kube-state-metrics

goldilocks/helm-values.yaml

@@ -11,7 +11,7 @@ dashboard:
       cpu: 15m
       memory: 100Mi
     limits:
-      memory: 150Mi
+      memory: 100Mi
 
   service:
     type: ClusterIP
@@ -54,7 +54,7 @@ controller:
       cpu: 15m
       memory: 100Mi
     limits:
-      memory: 150Mi
+      memory: 100Mi
 
   # Enable VPA recommendations for all namespaces
   # Set to false to only monitor namespaces with the label: goldilocks.fairwinds.com/enabled=true