Merge pull request #153 from emqx/20260218-reduce-rust-toolchain-size

fix: significantly reduce rust toolchain size

Author: savonarola

get-rust.sh

@@ -5,6 +5,7 @@ set -eu
 RUST_VERSION="${1:-1.88.0}"
 
 if [ -n "${RUST_VERSION}" ]; then
-  rustup toolchain install ${RUST_VERSION}
+  rustup toolchain install --profile minimal ${RUST_VERSION}
   rustup default ${RUST_VERSION}
+
 fi