Bump pygments from 2.7.4 to 2.15.0

Bumps [pygments](https://github.com/pygments/pygments) from 2.7.4 to 2.15.0.
- [Release notes](https://github.com/pygments/pygments/releases)
- [Changelog](https://github.com/pygments/pygments/blob/master/CHANGES)
- [Commits](pygments/pygments@2.7.4...2.15.0)

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

Signed-off-by: dependabot[bot] <[email protected]>

requirements-dev.txt

@@ -4,7 +4,7 @@
 #
 #    pip-compile requirements-dev.in
 #
-aspy.refactor-imports==2.1.1
+aspy-refactor-imports==2.1.1
     # via reorder-python-imports
 astroid==2.3.3
     # via pylint
@@ -13,17 +13,25 @@ attrs==20.3.0
 bleach==3.3.0
     # via readme-renderer
 cached-property==1.5.2
-    # via aspy.refactor-imports
+    # via aspy-refactor-imports
 certifi==2020.12.5
     # via requests
+cffi==1.15.1
+    # via cryptography
 chardet==4.0.0
     # via requests
+cryptography==41.0.2
+    # via secretstorage
 docutils==0.16
     # via readme-renderer
 idna==2.10
     # via requests
 isort==4.3.21
     # via pylint
+jeepney==0.8.0
+    # via
+    #   keyring
+    #   secretstorage
 keyring==22.0.1
     # via twine
 lazy-object-proxy==1.4.3
@@ -32,10 +40,10 @@ mccabe==0.6.1
     # via pylint
 more-itertools==8.7.0
     # via pytest
-mypy-extensions==0.4.3
-    # via mypy
 mypy==0.761
     # via -r requirements-dev.in
+mypy-extensions==0.4.3
+    # via mypy
 packaging==20.9
     # via
     #   bleach
@@ -46,30 +54,34 @@ pluggy==0.13.1
     # via pytest
 py==1.10.0
     # via pytest
-pygments==2.7.4
+pycparser==2.21
+    # via cffi
+pygments==2.15.0
     # via readme-renderer
 pylint==2.4.4
     # via -r requirements-dev.in
 pyparsing==2.4.7
     # via packaging
-pytest-dotenv==0.5.2
-    # via -r requirements-dev.in
 pytest==5.4.1
     # via
     #   -r requirements-dev.in
     #   pytest-dotenv
+pytest-dotenv==0.5.2
+    # via -r requirements-dev.in
 python-dotenv==0.15.0
     # via pytest-dotenv
 readme-renderer==28.0
     # via twine
 reorder-python-imports==1.9.0
     # via -r requirements-dev.in
-requests-toolbelt==0.9.1
-    # via twine
 requests==2.25.1
     # via
     #   requests-toolbelt
     #   twine
+requests-toolbelt==0.9.1
+    # via twine
+secretstorage==3.3.3
+    # via keyring
 six==1.15.0
     # via
     #   astroid