Bump getrandom to v0.4

Release PR: rust-random/getrandom#798

Author: tarcieri

Cargo.lock

@@ -25,7 +25,7 @@ num-traits = { version = "0.2.19", default-features = false }
 # optional dependencies
 der = { version = "0.8.0-rc.10", optional = true, default-features = false }
 hybrid-array = { version = "0.4.6", optional = true }
-getrandom = { version = "0.4.0-rc.1", optional = true, features = ["sys_rng"] }
+getrandom = { version = "0.4", optional = true, features = ["sys_rng"] }
 rand_core = { version = "0.10", optional = true, default-features = false }
 rlp = { version = "0.6", optional = true, default-features = false }
 serdect = { version = "0.4", optional = true, default-features = false }