[Security] Bump jinja2 from 2.11.2 to 2.11.3

Bumps [jinja2](https://github.com/pallets/jinja) from 2.11.2 to 2.11.3. **This update includes a security fix.**
- [Release notes](https://github.com/pallets/jinja/releases)
- [Changelog](https://github.com/pallets/jinja/blob/master/CHANGES.rst)
- [Commits](pallets/jinja@2.11.2...2.11.3)

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

requirements/docs.txt

@@ -12,15 +12,13 @@ certifi==2020.12.5
     # via requests
 chardet==4.0.0
     # via requests
-colorama==0.4.4
-    # via sphinx
 docutils==0.16
     # via sphinx
 idna==2.10
     # via requests
 imagesize==1.2.0
     # via sphinx
-jinja2==2.11.2
+jinja2==2.11.3
     # via sphinx
 markupsafe==1.1.1
     # via jinja2