fix: remove coverage from cache

Author: conblem

.github/workflows/rust.yaml

@@ -73,7 +73,10 @@ jobs:
             ~/.cargo/registry
             ~/.cargo/git
             target
-          key: ${{ runner.os }}-coverage-${{ hashFiles('**/Cargo.lock') }}
+            !*.gcno
+            !*.gcda
+            !*.gcov
+          key: ${{ runner.os }}-cargo-coverage-${{ hashFiles('**/Cargo.lock') }}
       - uses: actions-rs/cargo@v1
         with:
           command: test