test: 🔒 use more secure regex

Author: gingerbenw

test/browser/features/steps/browser-steps.rb

@@ -195,8 +195,8 @@
   end
 end
 
-Then(/^on ((?:[A-z]+ versions (?:>=?|<=?|==) [0-9.]+(?:, )?)+):$/) do |browser_specs, steps_to_run|
-  spec_matcher = /^([A-z]+) versions (>=?|<=?|==) ([0-9.]+)$/
+Then(/^on ((?:[A-Za-z]+ versions (?:>=?|<=?|==) [0-9.]+(?:, )?)+):$/) do |browser_specs, steps_to_run|
+  spec_matcher = /^([A-Za-z]+) versions (>=?|<=?|==) ([0-9.]+)$/
 
   browser_specs.split(", ").each do |browser_spec|
     browser_spec.scan(spec_matcher) do |name, operator, version|