fix(ci, signer-aws): increase recursion limit to fix error: queries overflow the depth limit! (#3633)

* increase recursion limit per

error: queries overflow the depth limit!
  |
  = help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`alloy_signer_aws`)
  = note: query depth increased by 130 when computing layout of `{async block@crates/signer-aws/src/signer.rs:120:5: 120:23}`

* add note

Author: zerosnacks

crates/signer-aws/src/lib.rs

@@ -5,6 +5,9 @@
 )]
 #![cfg_attr(not(test), warn(unused_crate_dependencies))]
 #![cfg_attr(docsrs, feature(doc_cfg))]
+// Increases the default recursion limit of 128 due to the deep type nesting
+// of the AWS SDK combined with async-trait and tracing instrumentation.
+#![recursion_limit = "256"]
 
 #[macro_use]
 extern crate tracing;