Update CHANGELOG.md

Author: datdenkikniet

CHANGELOG.md

@@ -1,5 +1,10 @@
 ## Unreleased
 
+## [0.7.0](https://github.com/stm32-rs/stm32-eth/tree/v0.7.0)
+* Update hals ([#97](https://github.com/stm32-rs/stm32-eth/pull/97))
+    * `stm32f4xx-hal` from `0.20` to `0.21`
+    * `stm32f7xx-hal` from `0.7` to `0.7`
+
 ## [0.6.0](https://github.com/stm32-rs/stm32-eth/tree/v0.6.0)
 * Update version of `smoltcp` to `v0.11.0` ([#92])
 * Remove re-export of `smoltcp`, and update examples ([#94])