chore: remove macOS workflow and update pnpm version in Windows and Ubuntu workflows

Author: oldrev

.github/workflows/macos.yml

@@ -27,8 +27,6 @@ jobs:
     steps:
     - uses: actions/checkout@v5
     - uses: pnpm/action-setup@v4
-      with:
-        version: 7.13.0
     - name: Cache node modules
       uses: actions/cache@v4
       env:

.github/workflows/ubuntu.yml

@@ -27,8 +27,6 @@ jobs:
     steps:
     - uses: actions/checkout@v6
     - uses: pnpm/action-setup@v4
-      with:
-        version: 7.13.0
     - name: Cache node modules
       uses: actions/cache@v4
       env: