Bump jinja2 from 2.10 to 2.10.1 in /sphinx

Bumps [jinja2](https://github.com/pallets/jinja) from 2.10 to 2.10.1.
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/master/CHANGES.rst)
- [Commits](pallets/jinja@2.10...2.10.1)

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

sphinx/requirements.txt

@@ -7,7 +7,7 @@ docutils==0.14
 funcsigs==1.0.2
 idna==2.8
 imagesize==1.1.0
-Jinja2==2.10
+Jinja2==2.10.1
 MarkupSafe==1.1.0
 mock==2.0.0
 pbr==5.1.1