Make use of cargo binstall in CI workflow

Author: regexident

.github/workflows/rust.yml

@@ -42,7 +42,8 @@ jobs:
         with:
           toolchain: 1.78.0
           components: rust-src
-      - run: cargo install cargo-expand
+      - uses: cargo-bins/[email protected]
+      - run: cargo binstall cargo-expand --no-confirm
       - run: cargo test -- --test-threads=1
 
   fmt: