chore(deps): add missing dependency cross-env

[ocavue]

Description

I found that in Github Codespace, the git hooks don't work well because of cross-env-shell: not found.

node ➜ ~/workspace/remirror (beta) $ git checkout -b fix_deps
Switched to a new branch 'fix_deps'
husky > post-checkout (node v14.15.4)
sh: 1: sh: 1: cross-env-shell: not foundcross-env-shell: not found

husky > post-checkout hook failed (cannot be bypassed with --no-verify due to Git specs)

BTW, when I wrote this PR, I just found out that cross-env was in maintenance mode. cross-env will continue to support the latest Node.js version as we as to fix security/critical bugs, so it should be ok to continue to use it. I just post this as a small piece of news.

Checklist

• I have read the contributing document.
• My code follows the code style of this project and pnpm fix completed successfully.
• I have updated the documentation where necessary.
• New code is unit tested and all current tests pass when running pnpm test.

[changeset-bot]

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Latest commit: 9060984

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[ifiokjr]

Good spot 👍