Merge torrust#928: ci: coverage workflow add pre-build-test step

16d4cb6 ci: coverage workflow add pre-build-test step (Cameron Garnham)

Pull request description:

ACKs for top commit:
  da2ce7:
    ACK 16d4cb6

Tree-SHA512: 42b8888c4b9072817da7d5e7465b8af46e1e81afb9bccdd98823de73446054e6742b38bba236cfdcc18225288dabad8e7d3cf08add210bab1bd90155e9ce0058

.github/workflows/coverage.yaml

@@ -63,6 +63,10 @@ jobs:
         name: Pre-build Main Project
         run: cargo build --jobs 2
 
+      - id: build_tests
+        name: Pre-build Tests
+        run: cargo build --tests --jobs 2
+
       - id: test
         name: Run Unit Tests
         run: cargo test --tests --workspace --all-targets --all-features