feat: update pkarr and mainline and add pubky ClientBuilder

examples/authn/signup.rs

@@ -24,7 +24,7 @@ async fn main() -> Result<()> {
 
     let homeserver = cli.homeserver;
 
-    let client = Client::new()?;
+    let client = Client::builder().build()?;
 
     println!("Enter your recovery_file's passphrase to signup:");
     let passphrase = rpassword::read_password()?;

examples/authz/authenticator.rs

@@ -78,7 +78,7 @@ async fn main() -> Result<()> {
 
         client
     } else {
-        Client::new()?
+        Client::builder().build()?
     };
 
     println!("Sending AuthToken to the 3rd party app...");

examples/request/main.rs

@@ -30,7 +30,7 @@ async fn main() -> Result<()> {
     let client = if args.testnet {
         Client::testnet()?
     } else {
-        Client::new()?
+        Client::builder().build()?
     };
 
     // Build the request