Fix PR handling on coverage report

.github/workflows/ci.yml

@@ -13,13 +13,10 @@ jobs:
         run: make dev-install
       - name: Run tests
         run: make test
-      - name: Report
-        uses: 5monkeys/cobertura-action@master
+      - uses: actions/upload-artifact@v4
         with:
+          name: coverage
           path: coverage.xml
-          minimum_coverage: 90
-          skip_covered: false
-          fail_below_threshold: true
 
   check:
     runs-on: ubuntu-20.04

.github/workflows/report.yml

@@ -0,0 +1,24 @@
+name: report
+on:
+  workflow_run:
+    workflows: [ci]
+    types:
+      - completed
+
+jobs:
+  test:
+    runs-on: ubuntu-20.04 # Ubuntu 20.04 LTS ships with the Python version we're currently targeting
+
+    steps:
+      - uses: actions/download-artifact@v4
+        with:
+          name: coverage
+          path: coverage.xml
+
+      - name: Report
+        uses: 5monkeys/cobertura-action@master
+        with:
+          path: coverage.xml
+          minimum_coverage: 90
+          skip_covered: false
+          fail_below_threshold: true