move tag_regex to variables section

Author: plbstl

script/release

@@ -18,6 +18,9 @@
 #
 # script/release
 
+# Variables
+tag_regex='v[0-9]+\.[0-9]+\.[0-9]+$'
+
 # Terminal colors
 OFF='\033[0m'
 RED='\033[0;31m'
@@ -40,7 +43,6 @@ echo -e "The latest release tag is: ${BLUE}${latest_tag}${OFF}"
 read -r -p 'Enter a new release tag (vX.X.X format): ' new_tag
 
 # Validate the new release tag
-tag_regex='v[0-9]+\.[0-9]+\.[0-9]+$'
 if echo "$new_tag" | grep -q -E "$tag_regex"; then
 	echo -e "Tag: ${BLUE}$new_tag${OFF} is valid"
 else