feat: Add support for MSC4466

Cargo.toml

@@ -344,7 +344,7 @@ version = "1.1.1"
 [workspace.dependencies.ruma]
 # version = "0.14.1"
 git = "https://github.com/ruma/ruma.git"
-rev = "9c9dccc93f054bbd28f23f630223fffa6289ecbc"
+rev = "3ecd80b92794d2d93f657a7b3db62d4be237526b"
 features = [
     "appservice-api-c",
     "client-api",
@@ -379,6 +379,7 @@ features = [
     "unstable-msc4293",
     "unstable-msc4406",
     "unstable-msc4439",
+    "unstable-msc4466",
     "unstable-extensible-events",
 ]