chore(deps): upgrade prost to 0.14 along with opentelemetry-proto and tonic-types

Replaces the prost014 alias workaround with a straightforward prost 0.14
upgrade. opentelemetry-proto (0.30→0.31) and tonic-types (0.13→0.14) both
moved to prost 0.14, so all three can be bumped together, eliminating the
dual-version dependency.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: lym953

bottlecap/Cargo.lock

@@ -44,15 +44,13 @@ rustls-pemfile = { version = "2.0", default-features = false, features = ["std"]
 rustls-pki-types = { version = "1.0", default-features = false }
 hyper-rustls = { version = "0.27.7", default-features = false }
 rand = { version = "0.8", default-features = false }
-prost = { version = "0.13", default-features = false }
-# libdd-trace-protobuf uses prost 0.14, so we alias it here to call encoded_len() on TracerPayload
-prost014 = { package = "prost", version = "0.14", default-features = false }
-tonic-types = { version = "0.13", default-features = false }
+prost = { version = "0.14", default-features = false }
+tonic-types = { version = "0.14", default-features = false }
 zstd = { version = "0.13.3", default-features = false }
 futures = { version = "0.3.31", default-features = false }
 serde-aux = { version = "4.7", default-features = false }
 serde_html_form = { version = "0.2", default-features = false }
-opentelemetry-proto = { version = "0.30.0", features = ["trace", "with-serde", "gen-tonic"] }
+opentelemetry-proto = { version = "0.31.0", features = ["trace", "with-serde", "gen-tonic"] }
 opentelemetry-semantic-conventions = { version = "0.30", features = ["semconv_experimental"] }
 # Pinned to <0.8.3: version 0.8.3 upgraded to openssl-probe 0.2.x which scans all cert
 # directories and parses ~200 individual cert files on Lambda instead of loading a single

bottlecap/Cargo.toml

@@ -34,7 +34,7 @@ use tracing::{debug, error};
 use crate::traces::stats_generator::StatsGenerator;
 use crate::traces::trace_aggregator::{OwnedTracerHeaderTags, SendDataBuilderInfo};
 use libdd_trace_normalization::normalizer::SamplerPriority;
-use prost014::Message as _;
+use prost::Message as _;
 
 #[derive(Clone)]
 #[allow(clippy::module_name_repetitions)]
@@ -1265,7 +1265,7 @@ mod tests {
     #[test]
     fn test_process_traces_body_size_reflects_filtered_payload() {
         use libdd_trace_obfuscation::obfuscation_config::ObfuscationConfig;
-        use prost014::Message as _;
+        use prost::Message as _;
 
         let config = Arc::new(Config {
             apm_dd_url: "https://trace.agent.datadoghq.com".to_string(),