build(deps): bump num-bigint from 0.4.8 to 0.5.1

Bumps [num-bigint](https://github.com/rust-num/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
...

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

Author: dependabot[bot]

Cargo.lock

@@ -38,7 +38,7 @@ cipher = "0.5"
 ctr = "0.10.0-rc.3"
 hex = { version = "0.4.1", features = ["serde"] }
 hex-literal = "1"
-num-bigint = "0.4.4"
+num-bigint = "0.5.1"
 paste = "1.0.15"
 pkcs8 = { version = "0.11", features = ["pem"] }
 proptest = "1.11.0"