ci: upgrade corepack

Author: pieh

.github/workflows/run-tests.yml

@@ -59,6 +59,9 @@ jobs:
           cache: 'npm'
           cache-dependency-path: '**/package-lock.json'
       - uses: oven-sh/setup-bun@v1
+      - name: upgrade corepack
+        run: npm install -g corepack@latest
+        shell: bash
       - name: setup pnpm/yarn
         run: corepack enable
         shell: bash