Commit these

.github/workflows/ci.yml

@@ -72,6 +72,8 @@ jobs:
       #
       # See https://github.com/actions/cache/blob/master/examples.md#node---yarn for details
       #
+      - name: Enable Corepack
+        run: corepack enable
       - name: Get yarn cache directory path
         id: yarn-cache-dir-path
         run: echo "::set-output name=dir::$(yarn cache dir)"

.yarnrc.yml

@@ -0,0 +1,3 @@
+nodeLinker: node-modules
+
+yarnPath: .yarn/releases/yarn-4.5.0.cjs

package.json

@@ -27,5 +27,6 @@
   "bugs": {
     "url": "https://github.com/growstuff/growstuff/issues"
   },
-  "homepage": "https://github.com/growstuff/growstuff#readme"
+  "homepage": "https://github.com/growstuff/growstuff#readme",
+  "packageManager": "yarn@4.5.0"
 }