Add .yarnrc to default to pinned dependencies (#1759)
Add .yarnrc to default to pinned dependencies (#1759)

* Add post-update yarn dedupe to Renovate

* Add .yarnrc to default to pinned dependencies

popcodeorg/popcode,popcodeorg/popcode,outoftime/learnpad,jwang1919/popcode,jwang1919/popcode,outoftime/learnpad,popcodeorg/popcode,jwang1919/popcode,jwang1919/popcode,popcodeorg/popcode