Update calamine requirement from 0.20.0 to 0.21.0 (#173)

Updates the requirements on [calamine](https://github.com/tafia/calamine) to permit the latest version.
- [Changelog](https://github.com/tafia/calamine/blob/master/Changelog.md)
- [Commits](tafia/calamine@v0.20.0...v0.21.0)

---
updated-dependencies:
- dependency-name: calamine
  dependency-type: direct:production
...

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

Cargo.toml

@@ -60,7 +60,7 @@ arrow = { version = "41", default-features = false, features = ["prettyprint", "
 rust_decimal = "1.14"
 strum = { version = "0.24", features = ["derive"] }
 r2d2 = { version = "0.8.9", optional = true }
-calamine = { version = "0.20.0", optional = true }
+calamine = { version = "0.21.0", optional = true }
 num = { version = "0.4", optional = true, default-features = false, features = ["std"] }
 duckdb-loadable-macros = { version = "0.1.0", path="./duckdb-loadable-macros", optional = true }