Run codecov action only once (#7427)

.codecov.yml

@@ -0,0 +1,20 @@
+codecov:
+  require_ci_to_pass: yes
+
+coverage:
+  precision: 2
+  round: down
+  range: "30...100"
+  status:
+    project:
+      default:
+        informational: true
+        target: auto
+        threshold: 0%
+
+ignore:
+  - "**/mock_*.go"                     # ignore all mock files
+  - "pkg/armrpc/rpctest"               # ignore all test helpers in rpctest
+  - "**/zz_generated*.go"              # ignore autogenerated files from autorest
+  - "pkg/controller/api"               # CRD related files
+  - "pkg/ucp/store/apiserverstore/api" # CRD related files

.github/workflows/build.yaml

@@ -102,11 +102,14 @@ jobs:
           go install gotest.tools/gotestsum@v${{ env.GOTESTSUMVERSION }}
           make test
       - name: Upload coverage to Codecov
-        uses: codecov/codecov-action@v3
+        if: matrix.target_arch == 'amd64' && matrix.target_os == 'linux'
+        uses: codecov/codecov-action@v4
         with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          codecov_yml_path: ./.codecov.yml
           file: ./dist/unit_test/ut_coverage.out
-          flags: unittests
-          fail_ci_if_error: false
+          fail_ci_if_error: true
+          verbose: true
       - name: Process Unit Test Results
         uses: ./.github/actions/process-test-results
         # Always is required here to make sure this target runs even when tests fail.