feat(rustproxy): use tikv-jemallocator as the global allocator to reduce glibc fragmentation and slow RSS growth; add allocator dependency and enable it in rustproxy, update lockfile, and run tsrust before tests

rust/crates/rustproxy/src/main.rs

@@ -1,3 +1,6 @@
+#[global_allocator]
+static GLOBAL: tikv_jemallocator::Jemalloc = tikv_jemallocator::Jemalloc;
+
 use clap::Parser;
 use tracing_subscriber::EnvFilter;
 use anyhow::Result;