Bump jinja2 from 2.10.1 to 2.11.3

Bumps [jinja2](https://github.com/pallets/jinja) from 2.10.1 to 2.11.3.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/master/CHANGES.rst)
- [Commits](pallets/jinja@2.10.1...2.11.3)

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

requirements.txt

@@ -10,7 +10,7 @@ scipy
 pysal
 ipython
 django==1.11.29
-jinja2==2.10.1
+jinja2==2.11.3
 owslib==0.9.0
 tilestache==1.50.1
 folium==0.1.4