Fix correct version of fucov

Author: derenv

.github/workflows/rust.yml

@@ -122,7 +122,7 @@ jobs:
           sudo apt install -y libadwaita-1-dev
       - name: Generate coverage
         # runs cargo with defaults flags, using the default `lcov` output
-        uses: Swatinem/fucov@v1
+        uses: Swatinem/fucov@v1.0.0
       - name: Upload coverage
         uses: codecov/[email protected]
         env: