[libpng] Update to 1.6.37 (#3916)

Co-authored-by: Vincent GIRARD <vincent@heliosphere.fr>

packages/libpng.rb

@@ -3,21 +3,13 @@ require 'package'
 class Libpng < Package
   description 'libpng is the official PNG reference library.'
   homepage 'http://libpng.org/pub/png/libpng.html'
-  version '1.6.36'
-  source_url 'https://downloads.sourceforge.net/project/libpng/libpng16/1.6.36/libpng-1.6.36.tar.xz'
-  source_sha256 'eceb924c1fa6b79172fdfd008d335f0e59172a86a66481e09d4089df872aa319'
+  version '1.6.37'
+  source_url 'https://downloads.sourceforge.net/project/libpng/libpng16/1.6.37/libpng-1.6.37.tar.xz'
+  source_sha256 '505e70834d35383537b6491e7ae8641f1a4bed1876dbfe361201fc80868d88ca'
 
   binary_url ({
-    aarch64: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-armv7l.tar.xz',
-     armv7l: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-armv7l.tar.xz',
-       i686: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-i686.tar.xz',
-     x86_64: 'https://dl.bintray.com/chromebrew/chromebrew/libpng-1.6.36-chromeos-x86_64.tar.xz',
   })
   binary_sha256 ({
-    aarch64: '134223fd27b8f1fb39bd1f44c795d41b60b49070c9f5f8c7b582af53b090279e',
-     armv7l: '134223fd27b8f1fb39bd1f44c795d41b60b49070c9f5f8c7b582af53b090279e',
-       i686: 'd84e969b8f24fc998ed61bf4a669346216d6167ed9f9f5b026eac5acb47ea0a0',
-     x86_64: 'fe2f3ba8855fbba9c0f81a1a5d377e78be56e8895e428e19c32b497417a8bf79',
   })
 
   depends_on 'zlibpkg'