chore(deps): bump getopts from 0.2.17 to 0.2.21

Bumps [getopts](https://github.com/rust-lang/getopts) from 0.2.17 to 0.2.21.
- [Release notes](https://github.com/rust-lang/getopts/releases)
- [Commits](rust-lang/getopts@0.2.17...v0.2.21)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -49,7 +49,7 @@ xr-profile = ["libservo/xr-profile"]
 backtrace = "0.3"
 clipboard = "0.5"
 euclid = "0.20"
-getopts = "0.2.11"
+getopts = "0.2.21"
 keyboard-types = "0.6"
 lazy_static = "1"
 libc = "0.2"