proto: bump version to 0.11.5

Author: Ralith

quinn-proto/Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "quinn-proto"
-version = "0.11.4"
+version = "0.11.5"
 edition.workspace = true
 rust-version.workspace = true
 license.workspace = true