Fix Chocolatey package updates

[Daniel15]

After #7595, the build server that publishes the Chocolatey package is hitting this error when trying to check out the Yarn Git repo now:

stderr: error: unable to create file __tests__/fixtures/install/install-update-auth-invalid-cache-integrity/.yarn-cache/v6/npm-safe-buffer-5.1.1-893312af69b2123def71f57889001671eeb2c853-integrity/node_modules/safe-buffer/.yarn-metadata.json: Filename too long

It's currently trying to check out the code to C:\Program Files (x86)\Jenkins\workspace\yarn-chocolatey

Maybe the workspace should move to a shorter directory, or maybe this update should just be moved to GitHub Actions. Don't want to spend too much time on something just for Yarn v1 if we'll be doing it differently for Berry. Making the directory path shorter is probably easiest.