Version update

data/Dockerfiles/dovecot/Dockerfile

@@ -3,7 +3,7 @@ LABEL maintainer "Andre Peters <andre.peters@servercow.de>"
 
 ARG DEBIAN_FRONTEND=noninteractive
 ENV LC_ALL C
-ENV DOVECOT_VERSION 2.2.30
+ENV DOVECOT_VERSION 2.2.30.2
 ENV PIGEONHOLE_VERSION 0.4.18
 
 RUN apt-get update && apt-get -y install \