fix: Updates SDWebImageWebPCoder. (#628)

This improves RAM usage for static webp assets see:
SDWebImage/SDWebImageWebPCoder#30

Potentially related to #622

Author: Almouro

RNFastImage.podspec

@@ -17,5 +17,5 @@ Pod::Spec.new do |s|
 
   s.dependency 'React'
   s.dependency 'SDWebImage', '~> 5.0'
-  s.dependency 'SDWebImageWebPCoder', '~> 0.2.3'
+  s.dependency 'SDWebImageWebPCoder', '~> 0.4.1'
 end