Updated libimagequant to 4.3.4

Author: radarhere

depends/install_imagequant.sh

@@ -2,7 +2,7 @@
 # install libimagequant
 
 archive_name=libimagequant
-archive_version=4.3.3
+archive_version=4.3.4
 
 archive=$archive_name-$archive_version
 

docs/installation/building-from-source.rst

@@ -64,7 +64,7 @@ Many of Pillow's features require external libraries:
 
 * **libimagequant** provides improved color quantization
 
-  * Pillow has been tested with libimagequant **2.6-4.3.3**
+  * Pillow has been tested with libimagequant **2.6-4.3.4**
   * Libimagequant is licensed GPLv3, which is more restrictive than
     the Pillow license, therefore we will not be distributing binaries
     with libimagequant support enabled.