tools: fix update-eslint.sh · nodejs/node@cac4beb

tools: fix update-eslint.sh

The script currently assumes that there is a package.json in `eslint-tmp`. If there isn't the logic of the script fails. This adds a call to `npm init --yes` ensuring there is a package.json and that the script can do it's thing. PR-URL: #14850 Reviewed-By: Rich Trott <rtrott@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com> Reviewed-By: Michaël Zasso <mic.besace@gmail.com>

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