Rust toolchain upgrade from 1.65 to 1.66

Signed-off-by: Trăistaru Andrei Cristian <atc@amazon.com>

Author: Trăistaru Andrei Cristian

tools/devctr/Dockerfile.aarch64

@@ -4,7 +4,7 @@ FROM ubuntu:18.04
 # The Rust toolchain layer will get updated most frequently, but we could keep the system
 # dependencies layer intact for much longer.
 
-ARG RUST_TOOLCHAIN="1.65.0"
+ARG RUST_TOOLCHAIN="1.66.0"
 ARG TINI_VERSION_TAG="v0.18.0"
 ARG TMP_BUILD_DIR=/tmp/build
 ARG TMP_POETRY_DIR

tools/devctr/Dockerfile.x86_64

@@ -4,7 +4,7 @@ FROM ubuntu:18.04
 # The Rust toolchain layer will get updated most frequently, but we could keep the system
 # dependencies layer intact for much longer.
 
-ARG RUST_TOOLCHAIN="1.65.0"
+ARG RUST_TOOLCHAIN="1.66.0"
 ARG TINI_VERSION_TAG="v0.18.0"
 ARG TMP_BUILD_DIR=/tmp/build
 ARG TMP_POETRY_DIR