fix(deps): bump required node version to >=18.18

[OnkarRuikar]

Summary

Build fails when node v18 is used.

Problem

Getting following error trying to do yarn install:

fsh$ yarn install
yarn install v1.22.19
[1/5] Validating package.json...
[2/5] Resolving packages...
[3/5] Fetching packages...
error @typescript-eslint/utils@7.14.1: The engine "node" is incompatible with this module. Expected version "^18.18.0 || >=20.0.0". Got "18.17.1"
error Found incompatible module.

The files .nvmrc and package.json are recommending old versions of node.

Solution

Update .nvmrc and package.json files to use v18.18.0.

How did you test this change?

Tried yarn install command before and after the fix.