regex – Decline all URIs with tilde character in Nginx

I would like to return a 403 whenever a request contains a tilde character (~)

Example: https://example.com/~/item-1/ or even. https://example.com/item1?status=~pending

I want the above to return a 403

My idea is to have something like the config below, but I’m not sure how to complete the regex part.

map $request_uri $filefromarg {
    [WHAT-REGEX-HERE];
    default $request_uri;
}

try_files $filefromarg $uri =403;

Kindly share how to do this and the possible regex pattern.