Bump num-bigint from 0.2.6 to 0.3.1

Bumps [num-bigint](https://github.com/rust-num/num-bigint) from 0.2.6 to 0.3.1.
- [Release notes](https://github.com/rust-num/num-bigint/releases)
- [Changelog](https://github.com/rust-num/num-bigint/blob/master/RELEASES.md)
- [Commits](rust-num/num-bigint@num-bigint-0.2.6...num-bigint-0.3.1)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ sp-consensus-babe = { version = "0.9.0", path = "../../../primitives/consensus/b
 sp-core = { version = "3.0.0", path = "../../../primitives/core" }
 sp-application-crypto = { version = "3.0.0", path = "../../../primitives/application-crypto" }
 sp-keystore = { version = "0.9.0", path = "../../../primitives/keystore" }
-num-bigint = "0.2.3"
+num-bigint = "0.3.1"
 num-rational = "0.2.2"
 num-traits = "0.2.8"
 serde = { version = "1.0.104", features = ["derive"] }

client/consensus/babe/Cargo.toml

@@ -17,7 +17,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 sp-arithmetic = { version = "3.0.0", path = ".." }
 honggfuzz = "0.5.49"
 primitive-types = "0.9.0"
-num-bigint = "0.2"
+num-bigint = "0.3"
 num-traits = "0.2"
 
 [[bin]]