Dedupe dependencies (#9523)

+ yarn bump + CI check for duplicate dependencies

.github/workflows/ci.yaml

@@ -36,6 +36,8 @@ jobs:
         run: yarn run lint:types
       - name: Run prettier
         run: yarn run lint:prettier
+      - name: Check for duplicate dependencies
+        run: yarn dedupe --check
   test:
     runs-on: ubuntu-latest
     steps:

.yarnrc.yml

@@ -6,4 +6,4 @@ plugins:
   - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs
     spec: "@yarnpkg/plugin-interactive-tools"
 
-yarnPath: .yarn/releases/yarn-berry.cjs
+yarnPath: .yarn/releases/yarn-2.4.2.cjs