chore: resolve errors encountered when running Lefthook

[P-manBrown]

Summary

To resolve errors occurring when running Lefthook, I will modify the settings for ESLint and Prettier.

Changes

• Modify ESLint settings
  Since Jest will not be used for a while, I uninstalled eslint-plugin-jest and removed references to eslint-plugin-jest from .eslintrc.js.
  This change resolves ESLint errors when running Lefthook.

• Modify Prettier settings
  To resolve errors when running Prettier, I modified the plugins section in .prettierrc.js.
  This change resolves Prettier errors when running Lefthook.

Testing

I confirmed that Lefthook's pre-commit works correctly with the following steps:

1. Make changes to any file and stage them.
2. Run yarn lefthook run pre-commit in the terminal.
3. Confirm that no errors occur.

I confirmed that Lefthook's pre-push works correctly with the following steps:

1. Run yarn lefthook run pre-push in the terminal.
2. Confirm that no errors occur.

Related Issues (Optional)

None

Notes (Optional)

I referred to the following page for the Prettier settings modification:
Cannot use any prettier plugins with yarn 4 + PnP