update build environment images resources limits

ci/jenkins/pod/milvus-cpu-version-build-env-pod.yaml

@@ -21,10 +21,10 @@ spec:
     tty: true
     resources:
       limits:
-        memory: "32Gi"
+        memory: "12Gi"
         cpu: "8.0"
       requests:
-        memory: "16Gi"
+        memory: "8Gi"
         cpu: "4.0"
   - name: milvus-mysql
     image: mysql:5.6

ci/jenkins/pod/milvus-gpu-version-build-env-pod.yaml

@@ -21,11 +21,11 @@ spec:
     tty: true
     resources:
       limits:
-        memory: "32Gi"
+        memory: "12Gi"
         cpu: "8.0"
         nvidia.com/gpu: 1
       requests:
-        memory: "16Gi"
+        memory: "8Gi"
         cpu: "4.0"
   - name: milvus-mysql
     image: mysql:5.6