Update codecov action

Signed-off-by: wangting0128 <ting.wang@zilliz.com>

.github/workflows/main.yaml

@@ -3,6 +3,19 @@ name: Build and test
 
 # This workflow is triggered on pushes or pull request to the repository.
 on:
+  push:
+    # file paths to consider in the event. Optional; defaults to all.
+    paths:
+      - 'scripts/**'
+      - 'internal/**'
+      - 'cmd/**'
+      - 'build/**'
+      - '.github/workflows/main.yaml'
+      - '.env'
+      - docker-compose.yml
+      - Makefile
+      - '!**.md'
+      - '!build/ci/jenkins/**'
   pull_request:
     # file paths to consider in the event. Optional; defaults to all.
     paths:
@@ -53,6 +66,7 @@ jobs:
         run: |
           ./build/builder.sh /bin/bash -c "make check-proto-product && make unittest"
       - name: Upload coverage to Codecov
+        if: github.repository == 'milvus-io/milvus'
         uses: codecov/codecov-action@v1
         with:
           token: ${{ secrets.CODECOV_TOKEN }}