Upgrade lilconfig version to enable ESM support

[thibautsabot]

This PR https://github.com/tailwindlabs/tailwindcss/pull/12455 was merged last year by a lilconfig maintainer.

However, looking at the merge commit here, only the package-lock.json file was changed, the package.json didn't make it through.

Upgrading to lilconfig v3 allows user to use ESM for importing postcss configs. (For example, when using "type": "module" in package.json)

On this branch, I used the latest version (which includes security patches), alongside a small bump to postcss-load-config.

[TomTom-Labs]

Can I bring this Pull Request up the stack again?

[hosemadev]

Also, upgrading this, would resolve:

"Versions of the package lilconfig from 3.1.0 and before 3.1.1 are vulnerable to Arbitrary Code Execution due to the insecure usage of eval in the dynamicImport function."

[shellscape]

Can we please get this merged? This resolves an error with my project as reported here https://github.com/shellscape/jsx-email/issues/257

[shellscape]

@thibautsabot [email protected] was just released today that contains an important fix for windows absolute paths.

[thecrypticace]

Closing in favor of #15289