Bump django-debug-toolbar from 1.7 to 1.11.1

Bumps [django-debug-toolbar](https://github.com/jazzband/django-debug-toolbar) from 1.7 to 1.11.1.
- [Release notes](https://github.com/jazzband/django-debug-toolbar/releases)
- [Changelog](https://github.com/jazzband/django-debug-toolbar/blob/1.11.1/docs/changes.rst)
- [Commits](django-commons/django-debug-toolbar@1.7...1.11.1)

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

requirements.benchmark.txt

@@ -1,7 +1,7 @@
 Sphinx==1.3.4
 Django>=1.11.15<2.0.0
 dj-database-url==0.3.0
-django-debug-toolbar==1.7
+django-debug-toolbar==1.11.1
 flake8==2.4.0
 pytest-cov==1.8.1
 pytest-django==2.8.0