Update redis to version 4.1.1

Signed-off-by: Tilo Spannagel <development@tilosp.de>

Author: tilosp

update.sh

@@ -27,7 +27,7 @@ declare -A extras=(
 declare -A pecl_versions=(
 	[APCu]='5.1.12'
 	[memcached]='3.0.4'
-	[redis]='3.1.6'
+	[redis]='4.1.1'
 )
 
 variants=(