Set Gerrit to 3.7.5

Change-Id: I1252966964c97c3dd25f882d859587aa3394f04f

almalinux/8/Dockerfile

diff --git a/almalinux/8/Dockerfile b/almalinux/8/Dockerfile
index 0c40bee..4dac66a 100644
--- a/almalinux/8/Dockerfile
+++ b/almalinux/8/Dockerfile
@@ -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-3.7.4-1 && \
+    yum -y install gerrit-3.7.5-1 && \
     /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

ubuntu/20/Dockerfile

diff --git a/ubuntu/20/Dockerfile b/ubuntu/20/Dockerfile
index 0f2821d..4598190 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=3.7.4-1 && \
+RUN apt-get -y install gerrit=3.7.5-1 && \
     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}/*' && \