Bump jinja2 from 3.0.2 to 3.0.3 in /docs (#1119)

Bumps [jinja2](https://github.com/pallets/jinja) from 3.0.2 to 3.0.3.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](pallets/jinja@3.0.2...3.0.3)

---
updated-dependencies:
- dependency-name: jinja2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

Author: dependabot[bot]

docs/requirements.txt

@@ -19,4 +19,4 @@ hypothesis==6.24.2
 
 # TODO: Remove this lock when we found and fix the route case.
 # See: https://github.com/typlog/sphinx-typlog-theme/issues/22
-jinja2==3.0.2
+jinja2==3.0.3