build(deps): bump markupsafe from 2.1.4 to 2.1.5 in /docs (#3179)

Bumps [markupsafe](https://github.com/pallets/markupsafe) from 2.1.4 to 2.1.5.
- [Release notes](https://github.com/pallets/markupsafe/releases)
- [Changelog](https://github.com/pallets/markupsafe/blob/main/CHANGES.rst)
- [Commits](pallets/markupsafe@2.1.4...2.1.5)

---
updated-dependencies:
- dependency-name: markupsafe
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

docs/requirements.txt

@@ -1,6 +1,6 @@
 Babel==2.14.0
 Jinja2==3.1.3
-MarkupSafe==2.1.4
+MarkupSafe==2.1.5
 Pygments==2.17.2
 Sphinx==6.2.1
 alabaster==0.7.16