chacha20: use rand_core v0.10.0-rc-2 crate release (#479)

cc @dhardy

Author: tarcieri

Cargo.lock

@@ -10,7 +10,3 @@ members = [
 
 [profile.dev]
 opt-level = 2
-
-[patch.crates-io]
-# TODO: remove after rand_core v0.10.0-rc.1 is released
-rand_core = { git = "https://github.com/rust-random/rand", branch = "push-spqltotzmryv" }

Cargo.toml

@@ -21,7 +21,7 @@ rand_core-compatible RNGs based on those ciphers.
 [dependencies]
 cfg-if = "1"
 cipher = { version = "0.5.0-rc.1", optional = true, features = ["stream-wrapper"] }
-rand_core = { version = "0.10.0-rc.1", optional = true, default-features = false }
+rand_core = { version = "0.10.0-rc-2", optional = true, default-features = false }
 
 # `zeroize` is an explicit dependency because this crate may be used without the `cipher` crate
 zeroize = { version = "1.8.1", optional = true, default-features = false }