Bump validators from 0.12.2 to 0.12.6

[dependabot[bot]]

Bumps validators from 0.12.2 to 0.12.6.

Changelog

Sourced from validators's changelog.

0.12.6 (2019-05-08)

• Fixed domain validator for single character domains (#118, pull request courtesy kingbuzzman)

0.12.5 (2019-04-15)

• Fixed py37 support (#113, pull request courtesy agiletechnologist)

0.12.4 (2019-01-02)

• Use inspect.getfullargspec() in py3 (#110, pull request courtesy riconnon)

0.12.3 (2018-11-13)

• Added allow_temporal_ssn parameter to fi_ssn validator (#97, pull request courtesy quantus)
• Remove py33 support

Commits

• 2e51683 Bump version
• 8067721 Fixes issue with domains that have a single character (#122)
• 34d355e Bump version
• 359653a Fix for TypeError in python 3.7 (#113)
• fc0eeae Bump version
• 93c7530 Use inspect.getfullargspec() in Python3 (#110)
• 676b65c Use SVG build status shield (#100)
• ff2c03b Bump version
• 9e54c72 Improve fi-ssn validator (#97)
• 1a0e1bb Fix pypy3, py3.7 and remove py33 (#99)
• Additional commits viewable in compare view

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