Bump embedded-graphics from 0.7 to 0.8

Author: richardeoin

Cargo.toml

@@ -80,8 +80,8 @@ panic-semihosting = "0.6"
 usb-device = "0.2.5"
 usbd-serial = "0.1.0"
 numtoa = "0.2.3"
-tinybmp = "0.4"
-embedded-graphics = "0.7"
+tinybmp = "0.5"
+embedded-graphics = "0.8"
 
 [dev-dependencies.smoltcp]
 version = "0.10.0"