docs: update tasks list for release branch (#15025)

scripts/linkify_changelog.py

@@ -1,15 +0,0 @@
-import fileinput
-import re
-
-# This script goes through the provided file, and replaces any " \#<number>",
-# with the valid mark down formatted link to it. e.g.
-# " [\#number](https://github.com/cosmos/cosmos-sdk/issues/<number>)
-# Note that if the number is for a PR, github will auto-redirect you when you click the link.
-# It is safe to run the script multiple times in succession. 
-#
-# Example:
-#
-# $ python ./scripts/linkify_changelog.py CHANGELOG.md
-for line in fileinput.input(inplace=1):
-    line = re.sub(r"\s\\#([0-9]+)", r" [\\#\1](https://github.com/cosmos/cosmos-sdk/issues/\1)", line.rstrip())
-    print(line)