deps: raise the buffa floor to 0.9.2 and regenerate checked-in code

.changes/unreleased/Changed-20260905-231500.yaml

@@ -0,0 +1,11 @@
+kind: Changed
+body: |-
+    **Updated to buffa 0.9.2; `connectrpc-health` and `connectrpc-reflection`
+    ship message code regenerated with it.** buffa 0.9.2 is a hardening
+    release: on the generated path, `decode_view` now attaches the
+    element-memory budget and the view decoders merge split map values the way
+    the owned decoder does. `connectrpc-build` users pick this up on their next
+    build; `buf generate` and `protoc-gen-connect-rust` users should reinstall
+    `protoc-gen-buffa` at 0.9.2 and regenerate, although code generated by
+    0.9.1 still compiles and runs against the new runtime.
+time: 2026-09-05T23:15:00.000000000+00:00

Cargo.toml

@@ -30,23 +30,23 @@ pin-project = "1"
 sync_wrapper = "1"
 async-trait = "0.1"
 
-# Protobuf. 0.9.1 is a hard floor rather than a preference, for two reasons.
+# Protobuf. The 0.9.x floor is hard rather than a preference, for two reasons.
 # 0.9.0 widens `types::put_len_delimited_header` and the
 # `map_codec::field_len` accumulator to `u64`, so code emitted by a 0.8.x
 # codegen does not compile against a 0.9 runtime; and the codegen paths call
 # `buffa_codegen::decode_request` and `tooling_decode_options`, which arrived
-# in 0.9.1. The floor also matches the regen baseline for the checked-in
+# in 0.9.1. Within 0.9.x the floor tracks the regen baseline for the checked-in
 # generated code — regenerate whenever it moves.
 # (connectrpc-build also sources the generated `mod.rs` `#[allow(...)]` list
 # from `buffa_codegen::ALLOW_LINTS`.)
 # NOTE: the `connectrpc` crate pins `buffa` directly (not `workspace = true`)
 # so its `json` cargo feature can gate `buffa/json` for proto-only builds —
 # keep that floor aligned with this one when bumping.
-buffa = { version = "0.9.1", features = ["json"] }
-buffa-types = { version = "0.9.1", features = ["json"] }
-buffa-codegen = { version = "0.9.1" }
+buffa = { version = "0.9.2", features = ["json"] }
+buffa-types = { version = "0.9.2", features = ["json"] }
+buffa-codegen = { version = "0.9.2" }
 # `reflect` is needed for `DescriptorPool`, which backs connectrpc-reflection.
-buffa-descriptor = { version = "0.9.1", features = ["reflect"] }
+buffa-descriptor = { version = "0.9.2", features = ["reflect"] }
 
 # Serialization
 serde = { version = "1", features = ["derive"] }