Fix coverage action

Author: pnehrer

.github/workflows/ci.yaml

@@ -68,7 +68,7 @@ jobs:
           RUSTFLAGS: '-Cinstrument-coverage'
           LLVM_PROFILE_FILE: 'target/coverage/%p-%m.profraw'
       - name: Generate coverage report
-        uses: ./
+        uses: ecliptical/covdir-report-action@v0.3
         with:
           summary: 'true'
           out: ./target/coverage.md