reqwest_client: Fix socks proxy settings (#19123)

Closes #19362

This pull request includes several updates to the `reqwest_client` crate
and its dependencies. The most important changes involve adding support
for SOCKS proxies, improving error handling for proxy URIs, and adding
tests for proxy functionality.

### Dependency Updates:
*
[`Cargo.toml`](diffhunk://#diff-2e9d962a08321605940b5a657135052fbcef87b5e360662bb527c96d9a615542L394-R401):
Added support for SOCKS proxies in the `reqwest` dependency by including
the `socks` feature.

### Code Improvements:
*
[`crates/reqwest_client/src/reqwest_client.rs`](diffhunk://#diff-8e036b034e987390be2f57373864b75d6983f0cf84e85c43793eb431d13538f3L47-R52):
Improved error handling when parsing proxy URIs by logging errors
instead of directly panicking.

### Testing Enhancements:
*
[`crates/reqwest_client/src/reqwest_client.rs`](diffhunk://#diff-8e036b034e987390be2f57373864b75d6983f0cf84e85c43793eb431d13538f3R274-R317):
Added tests to verify the handling of various proxy URIs, including
valid and invalid cases.

Release Notes:

- N/A

Cargo.lock

@@ -9303,6 +9303,7 @@ dependencies = [
  "system-configuration 0.6.1",
  "tokio",
  "tokio-rustls 0.26.0",
+ "tokio-socks",
  "tokio-util",
  "tower-service",
  "url",
@@ -12001,6 +12002,7 @@ dependencies = [
  "futures-io",
  "futures-util",
  "thiserror",
+ "tokio",
 ]
 
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