Add v8 to the `ignorePattern` for `capitalized-comments`

closes: https://github.com/xojs/xo/issues/765 V8 is Google's JS engine and allows for [native code coverage](https://v8.dev/blog/javascript-code-coverage). But in order to ignore lines from being gathered the string must be lowercase. ```diff - /* V8 ignore next 3 */ <--- as the default capitalized-comments rule would change + /* v8 ignore next 3 */ ``` Source: https://vitest.dev/guide/coverage.html#ignoring-code Further context: https://eslint.org/docs/latest/rules/capitalized-comments