bump Buck to 2020.10.21.01 (#88)

Author: dulmandakh

Dockerfile

@@ -8,7 +8,7 @@ ENV DEBIAN_FRONTEND=noninteractive
 ARG SDK_VERSION=commandlinetools-linux-6609375_latest.zip
 ARG ANDROID_BUILD_VERSION=29
 ARG ANDROID_TOOLS_VERSION=29.0.3
-ARG BUCK_VERSION=2020.09.09.01
+ARG BUCK_VERSION=2020.10.21.01
 ARG NDK_VERSION=20.1.5948944
 ARG NODE_VERSION=12.x
 ARG WATCHMAN_VERSION=4.9.0