Bump jinja2 from 2.10.3 to 2.11.0

Bumps [jinja2](https://github.com/pallets/jinja) from 2.10.3 to 2.11.0.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/master/CHANGES.rst)
- [Commits](pallets/jinja@2.10.3...2.11.0)

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

requirements.txt

@@ -12,7 +12,7 @@ dockerflow==2019.10.0
 hupper==1.9.1
 idna==2.8
 iso8601==0.1.12
-Jinja2==2.10.3
+Jinja2==2.11.0
 jsonpatch==1.24
 jsonpointer==2.0
 jsonschema==3.2.0