chore: Bump rust-protobuf crates to 3.7.1 (#287)

We also bump the Rust version to 1.74.0 as older Rust
toolchains are unable to compile the protobuf dependency

Author: varungandhi-src

.tool-versions

@@ -2,5 +2,5 @@ golang     1.20.14
 nodejs     16.20.2
 shellcheck 0.7.1
 yarn       1.22.22
-rust       1.71.0
+rust       1.74.0
 python     3.11.9

bindings/rust/Cargo.toml

@@ -17,7 +17,7 @@ rust-version = "1.60.0"
 
 [dependencies]
 # Keep in sync with dev/proto-generate.sh
-protobuf = "=3.2.0"
+protobuf = "=3.7.1"
 
 [dev-dependencies]
 pretty_assertions = "1.2.1"