fix(did-resolver): speed increases to handle resolution

Cargo.lock

···
  "serde",
  "serde_json",
  "thiserror 2.0.11",
+ "tokio",
 ]
 
 [[package]]

did-resolver/Cargo.toml

···
 reqwest = { version = "0.12.12", features = ["json", "native-tls"] }
 serde = { version = "1.0.217", features = ["derive"] }
 serde_json = "1.0.134"
-thiserror = "2.0.11"
+thiserror = "2.0.11"
+tokio = { version = "1.42", features = ["macros"] }

did-resolver/src/lib.rs

···
 
     pub async fn resolve_handle(&self, handle: &str) -> Result<Option<String>, Error> {
         // we want one of these to succeed
-        let http = self.resolve_handle_http(handle).await;
-        let dns = self.resolve_handle_dns(handle).await;
+        let http = self.resolve_handle_http(handle);
+        let dns = self.resolve_handle_dns(handle);
 
-        match (http, dns) {
+        match tokio::join!(http, dns) {
             (Ok(http), Ok(dns)) => Ok(dns.or(http)),
             (http, dns) => http.or(dns),
         }
···
     }
 
     async fn resolve_handle_dns(&self, handle: &str) -> Result<Option<String>, Error> {
-        let res = match self.dns.txt_lookup(format!("_atproto.{handle}")).await {
+        let res = match self.dns.txt_lookup(format!("_atproto.{handle}.")).await {
             Ok(txt) => txt,
             Err(err) => {
                 return match err.kind() {