Install mold linker for github workflow check

Author: jakewmeyer

.github/workflows/ci.yml

@@ -19,6 +19,9 @@ jobs:
       - name: Caching
         uses: Swatinem/rust-cache@v2
 
+      - name: Install mold
+        run: apt install -y mold
+
       - name: Run rustfmt
         run: cargo fmt -- --check