feat(ffi): enable unstable-hydra feature for the SDK bindings

Author: jmartinesp

bindings/matrix-sdk-ffi/CHANGELOG.md

@@ -8,6 +8,8 @@ All notable changes to this project will be documented in this file.
 
 ### Features:
 
+- The [`unstable-hydra`] feature has been enabled, which enables room v12 changes in the SDK.
+  [(#5450)](https://github.com/matrix-org/matrix-rust-sdk/pull/5450).
 - Add experimental support for
   [MSC4306](https://github.com/matrix-org/matrix-spec-proposals/pull/4306), with the
   `Room::fetch_thread_subscription()` and `Room::set_thread_subscription()` methods.

bindings/matrix-sdk-ffi/Cargo.toml

@@ -58,7 +58,7 @@ matrix-sdk-ffi-macros.workspace = true
 matrix-sdk-ui = { workspace = true, features = ["uniffi"] }
 mime = "0.3.16"
 once_cell.workspace = true
-ruma = { workspace = true, features = ["html", "unstable-msc3488", "compat-unset-avatar", "unstable-msc3245-v1-compat", "unstable-msc4278"] }
+ruma = { workspace = true, features = ["html", "unstable-msc3488", "compat-unset-avatar", "unstable-msc3245-v1-compat", "unstable-msc4278", "unstable-hydra"] }
 serde.workspace = true
 serde_json.workspace = true
 sentry = { version = "0.36.0", optional = true, default-features = false, features = [