ci: re-enable llvm-cov coverage

Author: da2ce7

.github/workflows/testing.yaml

@@ -104,7 +104,6 @@ jobs:
         name: Run Unit Tests
         run: cargo test --tests --benches --examples --workspace --all-targets --all-features
 
-      # Temporary Disable https://github.com/time-rs/time/issues/618
-      # - id: coverage
-      #   name: Generate Coverage Report
-      #   run: cargo llvm-cov nextest --tests --benches --examples --workspace --all-targets --all-features
+      - id: coverage
+        name: Generate Coverage Report
+        run: cargo llvm-cov nextest --tests --benches --examples --workspace --all-targets --all-features