chore: Disable hickory-dns feature from reqwest

As we now pass in our own resolver (and hickory instance) for every client,
having the hickory-dns feature enabled isn't necessary.

Cargo.toml

@@ -161,7 +161,6 @@ default-features = false
 features = [
     "rustls-no-provider",
     "socks",
-    "hickory-dns",
     "http2",
     "stream",
     "form",