ESLint v9 support

[pierluigilenoci]

ESLint 8 has been EOL since October 5, 2024.
Is there any ETA for migration?
https://eslint.org/blog/2024/09/eslint-v8-eol-version-support/#eslint-v8.x-end-of-life-is-october-5%2C-2024

Ref: eslint/eslint#18391

[JoshuaKGoldberg]

Duplicate of #1546, no?

[G-Rath]

As @JoshuaKGoldberg said, this is a duplicate - we already support v9

[pierluigilenoci]

@G-Rath @JoshuaKGoldberg I was misled by this one #1397 🤦🏻
So, I thought that version 9 support had not been released yet. 🤷‍♂
My bad. 😓