build(deps-dev): update pygments requirement

Updates the requirements on [pygments](https://github.com/pygments/pygments) to permit the latest version.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.14.0...2.15.1)

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

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -12,7 +12,7 @@ dependencies = [
     "colorama ~= 0.4.6",
     "jinja2 ~= 3.1.2",
     "pycodestyle ~= 2.10.0",
-    "pygments ~= 2.14.0",
+    "pygments >= 2.14,< 2.16",
     "pylint ~= 2.17.4",
     "requests >= 2.28,< 2.32",
     "six",