Bump num-bigint from 0.4.4 to 0.4.5 in /lang/rust (#2898)

Bumps [num-bigint](https://github.com/rust-num/num-bigint) from 0.4.4 to 0.4.5.
- [Changelog](https://github.com/rust-num/num-bigint/blob/master/RELEASES.md)
- [Commits](rust-num/num-bigint@num-bigint-0.4.4...num-bigint-0.4.5)

---
updated-dependencies:
- dependency-name: num-bigint
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

lang/rust/avro/Cargo.toml

@@ -61,7 +61,7 @@ crc32fast = { default-features = false, version = "1.4.0", optional = true }
 digest = { default-features = false, version = "0.10.7", features = ["core-api"] }
 libflate = { default-features = false, version = "2.1.0", features = ["std"] }
 log = { workspace = true }
-num-bigint = { default-features = false, version = "0.4.4", features = ["std", "serde"] }
+num-bigint = { default-features = false, version = "0.4.5", features = ["std", "serde"] }
 regex-lite = { default-features = false, version = "0.1.5", features = ["std", "string"] }
 serde = { workspace = true }
 serde_json = { workspace = true }