Add one last missing changelog file

This one is taken from https://github.com/haskell/cabal/commit/a41797d1b46347787aabca3a14a447e57c0edcf3

Add one last missing changelog file
This one is taken from https://github.com/haskell/cabal/commit/a41797d1b46347787aabca3a14a447e57c0edcf3
d648e0ac · Mikolaj Konarski · mergify-bot · 05925376 · d648e0ac
Commit d648e0ac authored 3 years ago by Mikolaj Konarski Committed by mergify-bot 3 years ago
--- a/release-notes/Cabal-3.4.1.0.md
+++ b/release-notes/Cabal-3.4.1.0.md
+### Bugfixes
+
+- Backport windows fix for packages using autoconf >= 2.70 [!7668](https://github.com/haskell/cabal/pull/7668)