Replace isahc with async ureq (#18414)

REplace isahc with ureq everywhere gpui is used.

This should allow us to make http requests without libssl; and avoid a
long-tail of panics caused by ishac.

Release Notes:

- (potentially breaking change) updated our http client

---------

Co-authored-by: Mikayla <mikayla@zed.dev>

crates/live_kit_server/Cargo.toml

@@ -20,7 +20,7 @@ jsonwebtoken.workspace = true
 log.workspace = true
 prost.workspace = true
 prost-types.workspace = true
-reqwest = "0.11"
+reqwest.workspace = true
 serde.workspace = true
 
 [build-dependencies]