update build_test.yml

.github/workflows/build_test.yml

@@ -19,7 +19,9 @@ jobs:
         with:
           channel: stable
       - run: flutter pub get
-      - run: cd example; flutter build ios --no-codesign
+      - run: cd example
+      - run: pod update WechatOpenSDK-XCFramework
+      - run: flutter build ios --no-codesign
 
   test_iOS_No_Pay:
     name: Test iOS no_pay on ${{ matrix.os }}
@@ -36,6 +38,7 @@ jobs:
       - run: |
              cd example
              sed -i.bak0 's/#    no_pay: true/    no_pay: true/' pubspec.yaml
+             pod update OpenWeChatSDKNoPay
              flutter build ios --no-codesign
 
   test_android: