Update ovos-config requirement in /requirements (#61)

Updates the requirements on [ovos-config](https://github.com/OpenVoiceOS/ovos-config) to permit the latest version.
- [Release notes](https://github.com/OpenVoiceOS/ovos-config/releases)
- [Changelog](https://github.com/OpenVoiceOS/ovos-config/blob/dev/CHANGELOG.md)
- [Commits](OpenVoiceOS/ovos-config@V0.0.12...2.0.0)

---
updated-dependencies:
- dependency-name: ovos-config
  dependency-version: 2.0.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

requirements/requirements.txt

@@ -1,4 +1,4 @@
 ovos-utils>=0.0.38,<1.0.0
 ovos_bus_client>=0.0.8,<2.0.0
-ovos-config>=0.0.12,<2.0.0
+ovos-config>=0.0.12,<3.0.0
 ovos-plugin-manager>=0.0.25,<2.0.0