Bump dependency version number

[DivineOmega]

This PR simply bumps the laravel-password-exposed-validation-rule dependency version constraint to the latest version.

As a result of this, it also removes HHVM support. This will therefore require a new major release.

[coveralls]

Pull Request Test Coverage Report for Build 64

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 100.0%

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Totals
Change from base Build 61:	0.0%
Covered Lines:	54
Relevant Lines:	54

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💛 - Coveralls

[dextermb]

🤔 💭

[DivineOmega]

Fixed the (unrelated) drop in test coverage, by adding a new test to ensure short usernames are excluded from context specific word checks.