chore: update rust toolchain to 1.65

Author: crepererum

rust-toolchain.toml

@@ -1,3 +1,3 @@
 [toolchain]
-channel = "1.63"
+channel = "1.65"
 components = [ "rustfmt", "clippy" ]

src/client/metadata_cache.rs

@@ -47,11 +47,7 @@ impl MetadataCache {
         // to ensure only the expected topics are present.
         if let Some(want) = topics {
             // Filter out any topics the caller did not ask for.
-            m.topics = m
-                .topics
-                .into_iter()
-                .filter(|t| want.contains(&t.name.0))
-                .collect();
+            m.topics.retain(|t| want.contains(&t.name.0));
 
             // Validate the resulting number of topics in the metadata response.
             if m.topics.len() != want.len() {