[Replacement]: is-gzip

### Package to replace `is-gzip` ### Suggested replacement(s) ```js function isGzip(buf) { if (buf.length < 3) return false return buf[0] === 31 && buf[1] === 139 && buf[2] === 8 } ``` ### Manifest type native (replaceable by a built-in platform feature) ### Rationale simple util ### Availability _No response_ ### Code example (optional) ```js ```