Bump pygments from 2.9.0 to 2.10.0 (#615)

Bumps [pygments](https://github.com/pygments/pygments) from 2.9.0 to 2.10.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.9.0...2.10.0)

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

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

requirements/ci.txt

@@ -2,7 +2,7 @@ codecov==2.1.12
 docutils==0.17.1
 tox==3.24.0
 tox-travis==0.12
-pygments==2.9.0
+pygments==2.10.0
 aiohttp==3.7.4.post0
 yarl==1.6.3
 multidict==5.1.0