Remove end of life version 14.0

See: https://github.com/nextcloud/server/wiki/Maintenance-and-Release-Schedule
Signed-off-by: Tilo Spannagel <development@tilosp.de>

update.sh

@@ -3,7 +3,6 @@ set -eo pipefail
 
 declare -A php_version=(
 	[default]='7.3'
-	[14.0]='7.2'
 )
 
 declare -A cmd=(
@@ -73,7 +72,7 @@ variants=(
 	fpm-alpine
 )
 
-min_version='14.0'
+min_version='15.0'
 
 # version_greater_or_equal A B returns whether A >= B
 function version_greater_or_equal() {