Run pedantic clippy in CI

This would be better as a pre-commit, but I could not for the life of me figure out how to pass in the `-W clippy::pedantic` argument to the pre-commit config

.github/workflows/build-test.yaml

@@ -18,3 +18,5 @@ jobs:
       run: cargo build --verbose
     - name: Run tests
       run: cargo test --verbose
+    - name: Run pedantic clippy
+      run: cargo clippy -- -D warnings -W clippy::pedantic