chore: update build command to use tsup

Updated the build step in the release workflow from `npm run build` to `npm run build:tsup`. This change optimizes the build process by leveraging the tsup bundler, which offers improved performance and output size for TypeScript projects.

Author: matthewgall

.github/workflows/release.yml

@@ -25,7 +25,7 @@ jobs:
         run: npm run test:coverage
 
       - name: Build
-        run: npm run build
+        run: npm run build:tsup
 
       - name: Generate changelog
         run: npx auto-changelog -p --stdout > RELEASE_NOTES.md