Update chrono-tz requirement from 0.4 to 0.6

Updates the requirements on [chrono-tz](https://github.com/chronotope/chrono-tz) to permit the latest version.
- [Release notes](https://github.com/chronotope/chrono-tz/releases)
- [Changelog](https://github.com/chronotope/chrono-tz/blob/main/CHANGELOG.md)
- [Commits](https://github.com/chronotope/chrono-tz/commits/v0.6.1)

---
updated-dependencies:
- dependency-name: chrono-tz
  dependency-type: direct:production
...

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

arrow/Cargo.toml

@@ -49,7 +49,7 @@ regex = "1.3"
 lazy_static = "1.4"
 packed_simd = { version = "0.3", optional = true, package = "packed_simd_2" }
 chrono = { version = "0.4", default-features = false, features = ["clock"] }
-chrono-tz = {version = "0.4", optional = true}
+chrono-tz = {version = "0.6", optional = true}
 flatbuffers = { version = "=2.0.0", optional = true }
 hex = "0.4"
 comfy-table = { version = "5.0", optional = true, default-features = false }