streamline some cache stuff?

Author: mydea

.github/workflows/build.yml

@@ -32,8 +32,6 @@ env:
     ${{ github.workspace }}/node_modules
     ${{ github.workspace }}/packages/*/node_modules
     ${{ github.workspace }}/dev-packages/*/node_modules
-    ~/.cache/ms-playwright/
-    ~/.cache/mongodb-binaries/
 
   # DEPENDENCY_CACHE_KEY: can't be set here because we don't have access to yarn.lock
 
@@ -137,7 +135,6 @@ jobs:
         uses: actions/setup-node@v4
         with:
           node-version-file: 'package.json'
-          cache: 'yarn'
 
         # we use a hash of yarn.lock as our cache key, because if it hasn't changed, our dependencies haven't changed,
         # so no need to reinstall them