Reduce sa rules download retry limit to 5 (#6225)

Reduces the retry limit for the sa rules download to a more reasonable 5 retries to prevent running in a timeout condition.

data/Dockerfiles/dovecot/sa-rules.sh

@@ -11,7 +11,7 @@ else
 fi
 
 # Deploy
-if curl --connect-timeout 15 --retry 10 --max-time 30 https://www.spamassassin.heinlein-support.de/$(dig txt 1.4.3.spamassassin.heinlein-support.de +short | tr -d '"' | tr -dc '0-9').tar.gz --output /tmp/sa-rules-heinlein.tar.gz; then
+if curl --connect-timeout 15 --retry 5 --max-time 30 https://www.spamassassin.heinlein-support.de/$(dig txt 1.4.3.spamassassin.heinlein-support.de +short | tr -d '"' | tr -dc '0-9').tar.gz --output /tmp/sa-rules-heinlein.tar.gz; then
   if gzip -t /tmp/sa-rules-heinlein.tar.gz; then
     tar xfvz /tmp/sa-rules-heinlein.tar.gz -C /tmp/sa-rules-heinlein
     cat /tmp/sa-rules-heinlein/*cf > /etc/rspamd/custom/sa-rules