Set Gerrit to 3.4.8-2

The packaging release 2 includes fixes on the
Gerrit pre-requisites:
- sudo
- Java 11

Also update the GerritForge's RPM repo to gerritforge-repo-1-4
for getting ARM64 architecture support.

Change-Id: I70fc8f14dd0a499b92b78cd736cf18f9a45d544d
diff --git a/almalinux/8/Dockerfile b/almalinux/8/Dockerfile
index ded920e..47712eb 100644
--- a/almalinux/8/Dockerfile
+++ b/almalinux/8/Dockerfile
@@ -2,7 +2,7 @@
 MAINTAINER Gerrit Code Review Community
 
 # Add Gerrit packages repository
-RUN rpm -i https://gerritforge.com/gerritforge-repo-1-2.noarch.rpm
+RUN rpm -i https://gerritforge.com/gerritforge-repo-1-4.noarch.rpm
 
 ADD entrypoint.sh /
 
@@ -10,7 +10,7 @@
 # (pre-trans Gerrit script needs to have access to the Java command)
 RUN yum -y install initscripts && \
     yum -y install java-11-openjdk && \
-    yum -y install gerrit-3.4.8-1 && \
+    yum -y install gerrit-3.4.8-2 && \
     /entrypoint.sh init && \
     rm -f /var/gerrit/etc/{ssh,secure}* && rm -Rf /var/gerrit/{static,index,logs,data,index,cache,git,db,tmp}/* && chown -R gerrit:gerrit /var/gerrit && \
     yum -y clean all
diff --git a/ubuntu/20/Dockerfile b/ubuntu/20/Dockerfile
index 01a25ef..dee85e2 100644
--- a/ubuntu/20/Dockerfile
+++ b/ubuntu/20/Dockerfile
@@ -16,7 +16,7 @@
 # Install OpenJDK and Gerrit in two subsequent transactions
 # (pre-trans Gerrit script needs to have access to the Java command)
 RUN apt-get -y install openjdk-11-jdk
-RUN apt-get -y install gerrit=3.4.8-1 && \
+RUN apt-get -y install gerrit=3.4.8-2 && \
     apt-mark hold gerrit && \
     /entrypoint.sh init && \
     bash -c 'rm -f /var/gerrit/etc/{ssh,secure}* && rm -Rf /var/gerrit/{static,index,logs,data,index,cache,git,db,tmp}/*' && \