set SHELL env for pnpm setup

Author: sksat

.github/workflows/pytest.yml

@@ -50,6 +50,8 @@ jobs:
       run: ./setup.sh
 
     - name: setup pnpm
+      env:
+        SHELL: bash
       run: |
         corepack enable pnpm
         pnpm setup

.github/workflows/validate-renovate.yml

@@ -14,6 +14,8 @@ jobs:
       - uses: actions/checkout@v4.1.7
 
       - name: setup pnpm
+        env:
+          SHELL: bash
         run: |
           corepack enable pnpm
           pnpm setup