feat: add new download feed to base head (#2587)

Author: JacobCoffee

templates/base.html

@@ -96,6 +96,8 @@
           href="https://feeds.feedburner.com/PythonSoftwareFoundationNews">
     <link rel="alternate" type="application/rss+xml" title="Python Insider"
           href="https://feeds.feedburner.com/PythonInsider">
+   <link rel="alternate" type="application/rss+xml" title="Python Releases"
+         href="https://www.python.org/downloads/feed.rss">
 
     {% comment %} No support for these yet...