Run tests in release mode as well

Author: w1th0utnam3

.github/workflows/build.yml

@@ -38,8 +38,19 @@ jobs:
       run: cargo build
     - name: Run tests
       run: cargo test
-    - name: Build (release)
-      run: cargo build --release
+
+  build_release:
+    name: Build & test release mode
+    runs-on: ubuntu-latest
+    needs: build_workspace
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          lfs: true
+      - name: Build (release)
+        run: cargo build --release
+      - name: Test (release)
+        run: cargo test --release
 
   build_lib_all_features:
     name: Build splashsurf_lib with all features