add coverage report

Author: Crocmagnon

.github/workflows/go.yml

@@ -29,3 +29,15 @@ jobs:
         run: go build -v ./...
       - name: Test
         run: make test
+      - name: Update coverage report
+        uses: ncruces/go-coverage-report@v0
+        with:
+          report: true
+          chart: true
+          amend: true
+        if: |
+          matrix.os == 'ubuntu-latest' &&
+          matrix.go == '1.23' &&
+          github.event_name == 'push'
+        continue-on-error: true
+