Bump pygments from 2.14.0 to 2.15.0 in /envs (#46)

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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envs/requirements.txt

@@ -40,7 +40,7 @@ plaster-pastedeploy==1.0.1
 platformdirs==3.0.0
 pluggy==1.0.0
 pycparser==2.21
-Pygments==2.14.0
+Pygments==2.15.0
 pyOpenSSL==23.0.0
 pyramid==2.0.1
 pyramid-debugtoolbar==4.10