Remove unnecessary Yarn install from publish workflow (#264)

Author: Mrtenz

.github/workflows/publish-release.yml

@@ -23,7 +23,6 @@ jobs:
       - uses: MetaMask/action-publish-release@v3
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - run: yarn --immutable
       - run: yarn build
       - name: Upload build artifacts
         uses: actions/upload-artifact@v4