Bump mw-plot from 0.10.0 to 0.11.0 in /extra_requirements (#126)

Bumps [mw-plot](https://github.com/henrysky/milkyway_plot) from 0.10.0 to 0.11.0.
- [Release notes](https://github.com/henrysky/milkyway_plot/releases)
- [Changelog](https://github.com/henrysky/milkyway_plot/blob/master/CHANGELOG.md)
- [Commits](henrysky/milkyway_plot@v0.10.0...v0.11.0)

---
updated-dependencies:
- dependency-name: mw-plot
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

extra_requirements/requirements-tests.txt

@@ -8,7 +8,7 @@ latex==0.7.0
 ipywidgets==8.1.0
 matplotlib==3.5.3; python_version<='3.7'
 matplotlib==3.5.3; python_version>'3.7'
-mw_plot==0.10.0
+mw_plot==0.11.0
 nbconvert==7.2.3
 nbmake==1.2.1
 numpy==1.21.6; python_version<='3.7'