Update URLs in comments and metadata to use HTTPS (GH-27458) (GH-27478)

(cherry picked from commit be42c06bb01206209430f3ac08b72643dc7cad1c)

Co-authored-by: Noah Kantrowitz <noah@coderanger.net>
diff --git a/Lib/xml/etree/ElementTree.py b/Lib/xml/etree/ElementTree.py
index 9924680..e9409fd 100644
--- a/Lib/xml/etree/ElementTree.py
+++ b/Lib/xml/etree/ElementTree.py
@@ -35,7 +35,7 @@
 
 #---------------------------------------------------------------------
 # Licensed to PSF under a Contributor Agreement.
-# See http://www.python.org/psf/license for licensing details.
+# See https://www.python.org/psf/license for licensing details.
 #
 # ElementTree
 # Copyright (c) 1999-2008 by Fredrik Lundh.  All rights reserved.
@@ -1283,7 +1283,7 @@ class XMLPullParser:
     def __init__(self, events=None, *, _parser=None):
         # The _parser argument is for internal use only and must not be relied
         # upon in user code. It will be removed in a future release.
-        # See http://bugs.python.org/issue17741 for more details.
+        # See https://bugs.python.org/issue17741 for more details.
 
         self._events_queue = collections.deque()
         self._parser = _parser or XMLParser(target=TreeBuilder())