Merge pull request #1927 from hermit-os/dependabot/cargo/riscv-0.15.0

build(deps): Bump riscv from 0.14.0 to 0.15.0

Author: mkroening

Cargo.lock

@@ -185,7 +185,7 @@ memory_addresses = { version = "0.2.3", default-features = false, features = [
 ] }
 
 [target.'cfg(target_arch = "riscv64")'.dependencies]
-riscv = "0.14"
+riscv = "0.15"
 sbi-rt = "0.0.3"
 semihosting = { version = "0.1", optional = true }
 tock-registers = { version = "0.10", optional = true }