Update django to 1.11.11

[pyup-bot]

There's a new version of Django available.
You are currently using 1.11.10. I have updated it to 1.11.11

These links might come in handy: PyPI | Changelog | Homepage

Changelog

1.11.11

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March 6, 2018

Django 1.11.11 fixes two security issues in 1.11.10.

CVE-2018-7536: Denial-of-service possibility in urlize and urlizetrunc template filters

The django.utils.html.urlize() function was extremely slow to evaluate
certain inputs due to catastrophic backtracking vulnerabilities in two regular
expressions. The urlize() function is used to implement the urlize and
urlizetrunc template filters, which were thus vulnerable.

The problematic regular expressions are replaced with parsing logic that
behaves similarly.

CVE-2018-7537: Denial-of-service possibility in truncatechars_html and truncatewords_html template filters

If django.utils.text.Truncator's chars() and words() methods were
passed the html=True argument, they were extremely slow to evaluate certain
inputs due to a catastrophic backtracking vulnerability in a regular
expression. The chars() and words() methods are used to implement the
truncatechars_html and truncatewords_html template filters, which were
thus vulnerable.

The backtracking problem in the regular expression is fixed.

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Got merge conflicts? Close this PR and delete the branch. I'll create a new PR for you.

Happy merging! 🤖