fix(deps): bump rmcp from 0.6.3 to 0.6.4

Bumps [rmcp](https://github.com/modelcontextprotocol/rust-sdk) from 0.6.3 to 0.6.4.
- [Release notes](https://github.com/modelcontextprotocol/rust-sdk/releases)
- [Commits](https://github.com/modelcontextprotocol/rust-sdk/commits)

---
updated-dependencies:
- dependency-name: rmcp
  dependency-version: 0.6.4
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -129,7 +129,7 @@ winnow = "=0.6.2"
 winreg = "0.55.0"
 schemars = "1.0.4"
 jsonschema = "0.30.0"
-rmcp = { version = "0.6.3", features = ["client", "transport-sse-client-reqwest", "reqwest", "transport-streamable-http-client-reqwest", "transport-child-process", "tower", "auth"] }
+rmcp = { version = "0.6.4", features = ["client", "transport-sse-client-reqwest", "reqwest", "transport-streamable-http-client-reqwest", "transport-child-process", "tower", "auth"] }
 
 [workspace.lints.rust]
 future_incompatible = "warn"