Update tokio-prost monorepo to 0.12.4

Author: renovate[bot]

codegen/Cargo.toml

@@ -9,7 +9,7 @@ edition = "2018"
 [dependencies]
 anyhow = "1"
 duct = "0.13"
-prost-build = "0.7"
+prost-build = "0.12.4"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
 # tonic-build = { version = "0.4", default-features = false, features = ["transport", "rustfmt"] }

crates/proto/Cargo.toml

@@ -10,8 +10,8 @@ edition = "2018"
 async-trait = "0.1"
 bitflags = "1"
 lazy_static = "1"
-prost = "0.7"
-prost-types = "0.7"
+prost = "0.12.4"
+prost-types = "0.12.4"
 thiserror = "1"
 tonic = "0.4"
 tracing = "0.1"