Use new GerritForge RPM repository with updated GPG keys

Change-Id: I3dbc871a419ffedfc7a62bcc252f14b1392e13f4

almalinux/9/Dockerfile

diff --git a/almalinux/9/Dockerfile b/almalinux/9/Dockerfile
index 5837f58..61fccca 100644
--- a/almalinux/9/Dockerfile
+++ b/almalinux/9/Dockerfile
@@ -2,8 +2,7 @@
 LABEL org.opencontainers.image.authors="luca.milanesio@gmail.com"
 
 # Add Gerrit packages repository and the newest GPG key
-RUN rpm -i https://gerritforge.com/gerritforge-repo-1-4.noarch.rpm
-RUN rpm --import 'https://keyserver.ubuntu.com/pks/lookup?op=get&search=0x72adb205736d7147da56e8c955787ed781304950'
+RUN rpm -i https://gerritforge.com/gerritforge-repo-1-5.noarch.rpm
 
 ADD entrypoint.sh /