Update changelog for 2.5.11 release: add #1608

Author: haszari

readme.txt

@@ -120,6 +120,7 @@ Release and roadmap notes available on the [WooCommerce Developers Blog](https:/
 - bug: Fix a javascript error when editing All Products inner blocks "Link to Product Page" option #1593 
 - bug: Fix an issue in All Products when ordering by newness was reversed #1598
 - bug: Fix a javascript error in editor when user re-selects same attribute in Filter Products by Attribute block #1596 
+- bug: Fix a render issue for product attribute values with ampersand (&) or other special characters #1608
 
 = 2.5.10 - 2020-01-09 =
 - All Products block: fix wrong price format for variable products with certain currency settings. #1518