Bump 6.12 to point release

6.12.0.182/Dockerfile

@@ -1,4 +1,4 @@
-FROM mono:6.12.0.122-slim
+FROM mono:6.12.0.182-slim
 
 # MAINTAINER Jo Shields <jo.shields@xamarin.com>
 # MAINTAINER Alexander Köplinger <alkpli@microsoft.com>

6.12.0.182/slim/Dockerfile

@@ -3,7 +3,7 @@ FROM debian:buster-slim
 # MAINTAINER Jo Shields <jo.shields@xamarin.com>
 # MAINTAINER Alexander Köplinger <alkpli@microsoft.com>
 
-ENV MONO_VERSION 6.12.0.122
+ENV MONO_VERSION 6.12.0.182
 
 RUN apt-get update \
   && apt-get install -y --no-install-recommends gnupg dirmngr ca-certificates \