Bump pygments from 2.14.0 to 2.15.0 (#12)

Bumps [pygments](https://github.com/pygments/pygments) from 2.14.0 to 2.15.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.14.0...2.15.0)

---
updated-dependencies:
- dependency-name: pygments
  dependency-type: direct:production
...

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

requirements.txt

@@ -1,5 +1,5 @@
 markdown-it-py==2.2.0
 mdurl==0.1.2
 mutf8==1.0.6
-Pygments==2.14.0
+Pygments==2.15.0
 rich==13.3.2