fix yarn

Author: cenfun

.github/workflows/test-tstyche.yml

@@ -49,7 +49,7 @@ jobs:
           node-version: 20
           check-latest: true
 
-      - run: npm i yarn -g
+      - run: corepack enable
       - run: yarn install
       - run: yarn add monocart-coverage-reports@latest