Bump jinja2 from 2.11.3 to 3.1.3 in /examples/server/wsgi (#1298) #nolog

Bumps [jinja2](https://github.com/pallets/jinja) from 2.11.3 to 3.1.3.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/main/CHANGES.rst)
- [Commits](https://github.com/pallets/jinja/compare/2.11.3...3.1.3)

---
updated-dependencies:
- dependency-name: jinja2
  dependency-type: direct:production
...

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

examples/server/wsgi/requirements.txt

@@ -5,7 +5,7 @@ eventlet==0.20.1
 Flask==1.0.2
 greenlet==0.4.12
 itsdangerous==1.1.0
-Jinja2==2.11.3
+Jinja2==3.1.3
 MarkupSafe==1.1.0
 packaging==16.8
 pyparsing==2.1.10