fix: clamav version

Author: hupe1980

packages/cdk-s3-antivirus/src/layers/clamav/Dockerfile

@@ -1,7 +1,7 @@
 FROM public.ecr.aws/lambda/provided:al2.2021.09.13.11
 
 ARG asset_name=layer
-ARG CLAMAV_VERSION=0.103.3-5.el7
+ARG CLAMAV_VERSION=0.103.3-8.el7
 
 USER root
 RUN mkdir -p /opt/{lib,clamav}
@@ -10,8 +10,7 @@ RUN mkdir -p /opt/{lib,clamav}
 # tools
 #
 RUN yum install -y zip yum-utils amazon-linux-extras
-RUN amazon-linux-extras install epel -y
-RUN yum-config-manager --enable epel
+RUN amazon-linux-extras install epel -y && yum-config-manager --enable epel
 
 #
 # layer