Bump stylelint from 15.10.2 to 15.11.0 (#11292)

* Bump stylelint from 15.10.2 to 15.11.0

Bumps [stylelint](https://github.com/stylelint/stylelint) from 15.10.2 to 15.11.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@15.10.2...15.11.0)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

* Bump stylelint from 15.10.2 to 15.11.0

Bumps [stylelint](https://github.com/stylelint/stylelint) from 15.10.2 to 15.11.0.
- [Release notes](https://github.com/stylelint/stylelint/releases)
- [Changelog](https://github.com/stylelint/stylelint/blob/main/CHANGELOG.md)
- [Commits](stylelint/stylelint@15.10.2...15.11.0)

---
updated-dependencies:
- dependency-name: stylelint
  dependency-type: direct:development
  update-type: version-update:semver-minor
...

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

* make flake8 not lint anything under the node_modules dir

---------

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Mavis Ou <[email protected]>

.flake8

@@ -1,4 +1,4 @@
 [flake8]
-extend-exclude=*migrations*,dockerpythonvenv/*,network-api/media/*,network-api/staticfiles/*
+extend-exclude=*migrations*,dockerpythonvenv/*,network-api/media/*,network-api/staticfiles/*,node_modules/*
 extend-ignore = E203
 max-line-length=119