Bump pygments from 2.13.0 to 2.15.0

Bumps [pygments](https://github.com/pygments/pygments) from 2.13.0 to 2.15.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.13.0...2.15.0)

---
updated-dependencies:
- dependency-name: pygments
  dependency-type: indirect
...

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

requirements.txt

@@ -1,10 +1,18 @@
-certifi==2022.12.7 ; python_version >= "3.9" and python_version < "3.10"
-charset-normalizer==2.1.1 ; python_version >= "3.9" and python_version < "3.10"
-commonmark==0.9.1 ; python_version >= "3.9" and python_version < "3.10"
-idna==3.4 ; python_version >= "3.9" and python_version < "3.10"
-pygments==2.13.0 ; python_version >= "3.9" and python_version < "3.10"
-python-dotenv==0.20.0 ; python_version >= "3.9" and python_version < "3.10"
-requests==2.28.1 ; python_version >= "3.9" and python_version < "3.10"
-rich==12.6.0 ; python_version >= "3.9" and python_version < "3.10"
-urllib3==1.26.13 ; python_version >= "3.9" and python_version < "3.10"
-xlrd==2.0.1 ; python_version >= "3.9" and python_version < "3.10"
+#
+# These requirements were autogenerated by pipenv
+# To regenerate from the project's Pipfile, run:
+#
+# pipenv lock --requirements
+#
+
+-i https://pypi.org/simple/
+certifi==2023.5.7; python_full_version >= '3.6.0'
+charset-normalizer==2.1.1; python_full_version >= '3.6.0'
+commonmark==0.9.1
+idna==3.4; python_version >= '3.5'
+pygments==2.15.0
+python-dotenv==0.21.0
+requests==2.28.1
+rich==12.6.0
+urllib3==1.26.16; python_version >= '2.7' and python_version not in '3.0, 3.1, 3.2, 3.3, 3.4, 3.5'
+xlrd==2.0.1