Update pre-commit hooks

Merge pull request django-haystack#294 from django-haystack/dependabo…

…t/pip/flake8-assertive-1.2.1

Bump flake8-assertive from 1.1.0 to 1.2.1

Merge pull request django-haystack#241 from efagerberg/CommitPolicyCh…

…angelog

Adding ChangeLog note about default commit policy

Enable Probot stale for pysolr

Merge pull request django-haystack#228 from MitchellEHolmes/master

Added authentication and https support for Solr and CloudSolr

Update version numbers for v3.4.0

Version 3.3.2