Add xkeyboard-config as dependecy

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-webservice.

Closes #19

Closes conda-forge/qt-main-feedstock#117

Here's a checklist to do before merging.

• Bump the build number if needed.

[conda-forge-webservices]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

I do have some suggestions for making it better though...

For recipe:

• License is not an SPDX identifier (or a custom LicenseRef) nor an SPDX license expression.

Documentation on acceptable licenses can be found here.

[hmaarrfk]

@conda-forge-admin please rerender