chore(fider): hint memory limit to Go

fider/resources/deployment.yaml

@@ -21,6 +21,11 @@ spec:
             - containerPort: 3000
               protocol: TCP
               name: web
+          env:
+            - name: GOMEMLIMIT
+              valueFrom:
+                resourceFieldRef:
+                  resource: limits.memory
           envFrom:
             - secretRef:
                 name: fider-config