Add changelog entries for e310x and riscv bump

Author: yvt

CHANGELOG.md

@@ -9,6 +9,8 @@ and this project adheres to [Semantic Versioning](http://semver.org/).
 
 - Refactored `e310x-hal::spi` module, splitting the abstraction into `SpiBus` and `SpiExclusiveDevice/SpiSharedDevice` to allow multiple devices on a single SPI bus to co-exist
 - Added Pulse Width Modulation interface implementing `embedded_hal::Pwm`
+- Update `e310x` dependency to version 0.10
+- Update `riscv` dependency to version 0.8
 
 ## [v0.9.4] - 2022-07-10