Bump odbc-sys from 0.20.0 to 0.21.0

Bumps [odbc-sys](https://github.com/pacman82/odbc-sys) from 0.20.0 to 0.21.0.
- [Release notes](https://github.com/pacman82/odbc-sys/releases)
- [Changelog](https://github.com/pacman82/odbc-sys/blob/master/Changelog.md)
- [Commits](pacman82/odbc-sys@v0.20.0...v0.21.0)

---
updated-dependencies:
- dependency-name: odbc-sys
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

odbc-api/Cargo.toml

@@ -29,7 +29,7 @@ readme = "../Readme.md"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-odbc-sys = "0.20.0"
+odbc-sys = "0.21.0"
 thiserror = "1.0.30"
 log = "0.4.14"
 widestring = "0.5.1"