update changelog

Author: github-actions[bot]

changelog-versions/20.7.0.md

@@ -0,0 +1,8 @@
+## 🐞 Bugs fixed
+
+- Carousel items not adapting to the heigh of the peek slide [#2549](https://github.com/Telefonica/mistica-design/issues/2549)
+- Drawer slot size [#2550](https://github.com/Telefonica/mistica-design/issues/2550)
+
+## Movistar
+
+- Create new static logo for skin "movistar-new" [#2485](https://github.com/Telefonica/mistica-design/issues/2485)