Use stm32g4 v0.16 (#10)

Author: usbalbin

Cargo.toml

@@ -6,7 +6,7 @@ edition = "2021"
 [dependencies]
 stm32f3 = { git = "https://github.com/stm32-rs/stm32-rs-nightlies", optional = true }
 stm32h7 = { git = "https://github.com/stm32-rs/stm32-rs-nightlies", features = ["critical-section"], optional = true }
-stm32g4 = { version = "0.22.0", package = "stm32g4-staging", optional = true }
+stm32g4 = { version = "0.16.0", optional = true }
 
 defmt = { version = "1", optional = true }
 fugit = "0.3.7"