Update rust.yml

Author: mzvankovich

.github/workflows/rust.yml

@@ -19,7 +19,7 @@ jobs:
           - nightly
     steps:
       - uses: actions/checkout@v3
-      - run: rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
-      - run: cargo build --verbose
-      - run: cargo test --verbose
+      - run: cd transformer && rustup update ${{ matrix.toolchain }} && rustup default ${{ matrix.toolchain }}
+      - run: cd transformer && cargo build --verbose
+      - run: cd transformer && cargo test --verbose