chore(deps): bump num-bigint in the dependencies group

Bumps the dependencies group with 1 update: [num-bigint](https://github.com/rust-num/num-bigint).


Updates `num-bigint` from 0.4.8 to 0.5.1
- [Changelog](https://github.com/rust-num/num-bigint/blob/main/RELEASES.md)
- [Commits](rust-num/num-bigint@num-bigint-0.4.8...num-bigint-0.5.1)

---
updated-dependencies:
- dependency-name: num-bigint
  dependency-version: 0.5.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
  dependency-group: dependencies
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Cargo.lock

@@ -36,7 +36,7 @@ include = [
 [dependencies]
 # All runtime deps are optional; see [features] below.
 # Must stay in sync with num-rational
-num-bigint = { version = "0.4.6", optional = true }
+num-bigint = { version = "0.5.1", optional = true }
 num-rational = { version = "0.4.2", features = [ "num-bigint-std" ], optional = true }
 num-traits = { version = "0.2.19", optional = true }