pip prod(deps): update pygments requirement from >=2.20.0 to >=2.21.0

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@2.20.0...2.21.0)

---
updated-dependencies:
- dependency-name: pygments
  dependency-version: 2.21.0
  dependency-type: direct:production
...

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

Author: dependabot[bot]

tools/requirements.txt

@@ -2,7 +2,7 @@
 click == 8.4.2
 requests >= 2.34.2
 prompt_toolkit >= 3.0.52
-pygments >= 2.20.0
+pygments >= 2.21.0
 urllib3 >= 2.7.0
 rich == 15.0.0
 # only used for soap transport

tools/test-requirements.txt

@@ -7,7 +7,7 @@ sphinx
 click == 8.4.2
 requests >= 2.34.2
 prompt_toolkit >= 3.0.52
-pygments >= 2.20.0
+pygments >= 2.21.0
 urllib3 >= 2.7.0
 rich >= 12.3.0
 flake8