Use match? in FactoryBot#aliases_for to save allocations (#1457)

FactoryBot relies on ruby >= 2.5, so we can use Regexp#match? that does not allocate MatchData

Allocations measured with heap-profiler gem in an internal test suite with 7497 examples and 149470 calls to aliases_for:

allocated memory by file
-----------------------------------
    59.79 MB  factory_bot-6.1.0/lib/factory_bot/aliases.rb
    38.27 MB  factory_bot-6.1.0/lib/factory_bot/aliases.rb

allocated objects by file
-----------------------------------
    896880  factory_bot-6.1.0/lib/factory_bot/aliases.rb
    597940  factory_bot-6.1.0/lib/factory_bot/aliases.rb

lib/factory_bot/aliases.rb

@@ -10,7 +10,7 @@ class << self
 
   def self.aliases_for(attribute)
     aliases.map { |(pattern, replace)|
-      if pattern.match(attribute.to_s)
+      if pattern.match?(attribute)
         attribute.to_s.sub(pattern, replace).to_sym
       end
     }.compact << attribute