chore: add cardano changelogs

Author: matejcik

core/CHANGELOG.md

@@ -13,6 +13,8 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 
 ### Changed
 - Allow decreasing the output value in RBF transactions.  [#1491]
+- Cardano: Allow stake pool registrations with zero margin.  [#1502]
+- Cardano: Assets are now shown as CIP-0014.  [#1510]
 
 ### Deprecated
 
@@ -376,5 +378,7 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 [#1404]: https://github.com/trezor/trezor-firmware/issues/1404
 [#1415]: https://github.com/trezor/trezor-firmware/pull/1415
 [#1467]: https://github.com/trezor/trezor-firmware/issues/1467
-[#1518]: https://github.com/trezor/trezor-firmware/pull/1518
 [#1491]: https://github.com/trezor/trezor-firmware/issues/1491
+[#1502]: https://github.com/trezor/trezor-firmware/issues/1502
+[#1510]: https://github.com/trezor/trezor-firmware/issues/1510
+[#1518]: https://github.com/trezor/trezor-firmware/pull/1518

legacy/firmware/CHANGELOG.md

@@ -380,5 +380,5 @@ The format is based on [Keep a Changelog](https://keepachangelog.com/en/1.0.0/).
 [#1369]: https://github.com/trezor/trezor-firmware/pull/1369
 [#1402]: https://github.com/trezor/trezor-firmware/pull/1402
 [#1415]: https://github.com/trezor/trezor-firmware/pull/1415
-[#1518]: https://github.com/trezor/trezor-firmware/pull/1518
 [#1491]: https://github.com/trezor/trezor-firmware/issues/1491
+[#1518]: https://github.com/trezor/trezor-firmware/pull/1518