build(deps): bump digest from 0.11.0-rc.8 to 0.11.0-rc.9 (#779)

Author: dependabot[bot]

Cargo.lock

@@ -23,7 +23,7 @@ cipher = "0.5.0-rc.6"
 cmac = "0.8.0-rc.3"
 ctr = "0.10.0-rc.2"
 dbl = "0.5"
-digest = { version = "0.11.0-rc.4", features = ["mac"] }
+digest = { version = "0.11.0-rc.9", features = ["mac"] }
 
 # optional dependencies
 pmac = { version = "0.8.0-rc.3", optional = true }