ci: fix coverage not launched on merge

.github/workflows/coverage.yml

@@ -0,0 +1,26 @@
+---
+name: Coverage
+on:
+  push:
+    branches:
+      - main
+jobs:
+  go-lint:
+    runs-on: ubuntu-latest
+    steps:
+      - name: checkout-action
+        uses: actions/[email protected]
+
+      - name: Set up Go
+        uses: actions/setup-go@v5
+
+      - name: Run tests
+        run: go test -coverprofile=coverage.txt
+
+      - name: Upload results to Codecov
+        uses: codecov/codecov-action@v4
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+
+      - name: Launch golangci-lint
+        uses: golangci/[email protected]