Bump jinja2 from 2.11.1 to 2.11.2

Bumps [jinja2](https://github.com/pallets/jinja) from 2.11.1 to 2.11.2.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/master/CHANGES.rst)
- [Commits](pallets/jinja@2.11.1...2.11.2)

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

requirements.txt

@@ -1,7 +1,7 @@
 certifi==2020.4.5.1
 chardet==3.0.4
 idna==2.9
-Jinja2==2.11.1
+Jinja2==2.11.2
 kinto-http==10.7.0
 lxml==4.5.0
 MarkupSafe==1.1.1