fix: Cross compile tests as well

We ran the tests first, but did not cross compile them. This step would
also compile all the grammar libraries (but for the host machine). On
the actual release build, the editor would get built for the target, but
the grammar libraries would be detected as present and wouldn't
recompile.

Refs #577

.github/workflows/release.yml

@@ -67,8 +67,9 @@ jobs:
       - name: Run cargo test
         uses: actions-rs/cargo@v1
         with:
+          use-cross: ${{ matrix.cross }}
           command: test
-          args: --release --locked
+          args: --release --locked --target ${{ matrix.target }}
 
       - name: Build release binary
         uses: actions-rs/cargo@v1