Update robotframework to 6.1.1

[pyup-bot]

This PR updates robotframework from 6.0.2 to 6.1.1.

Changelog

6.1.1

[Robot Framework](http://robotframework.org/) 6.1.1 is the first bug fix release in the [Robot Framework 6.1](https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-6.1.rst) series.

For more information see the [full release notes](https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-6.1.1.rst).

6.1

Robot Framework 6.1 is a new feature release with support for converting Robot Framework data to JSON and back, a new external parser API, possibility to mix embedded and normal arguments, and various other interesting new features both for normal users and for external tool developers.

For more details, see the [full release notes](https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-6.1.rst). Release packages can be found at [PyPI](https://pypi.org/project/robotframework/6.1/).

6.1rc1

Robot Framework 6.1 is a new feature release with support for converting Robot Framework data to JSON and back, a new external parser API, possibility to mix embedded and normal arguments, and various other interesting new features both for normal users and for external tool developers. This release candidate contains all planned fixes and features. We hope that all Robot Framework users could test it in their environments to help us find possible regressions before the final release.

For more details, see the [full release notes](https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-6.1rc1.rst).

6.1b1

Robot Framework 6.1 is a new feature release with support for converting Robot Framework data to JSON and back, a new external parser API, and various other interesting new features both for normal users and for external tool developers. This beta release is especially targeted for tool developers interested to test the new APIs. It also contains all planned backwards incompatible changes and deprecated features, and everyone interested to make sure their tests, tasks or tools are compatible, should test it in their environment.

For more details see the [full release notes](https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-6.1b1.rst).

6.1a1

Robot Framework 6.1 is a new feature release with support for converting Robot Framework data to JSON and back as well as various other interesting new features both for normal users and for external tool developers. This first alpha release is especially targeted for those interested to test JSON serialization. It also contains all planned backwards incompatible changes and deprecated features, so everyone interested to make sure their tests, tasks or tools are compatible, should test it in their environment.

For more details see the [full release notes](https://github.com/robotframework/robotframework/blob/master/doc/releasenotes/rf-6.1a1.rst).

Links

• PyPI: https://pypi.org/project/robotframework
• Changelog: https://pyup.io/changelogs/robotframework/
• Homepage: https://robotframework.org

[atodorov]

@dependabot rebase