Bump oj from 3.3.4 to 3.6.0

[dependabot-preview]

Bumps oj from 3.3.4 to 3.6.0.

Changelog

Sourced from oj's changelog.

3.6.0 - 2018-05-01

• Add optimization for Rails ActiveRecord::Result encoding.

3.5.1 - 2018-04-14

• Fixed issue with \u0000 terminating keys early.

• Add trace for calls to to_json and 'as_json`.

3.5.0 - 2018-03-04

• A trace option is now available in all modes. The format roughly follows the Ruby trace format.

3.4.0 - 2018-01-24

• Option to ignore specific classes in :object and :custom mode added.

3.3.10 - 2017-12-30

• Re-activated the bigdecimal_as_decimal option in custom mode and made the selection active for Rails mode.

• Fixed bug in optimize_rails that did not optimize all classes as expected.

• Fixed warnings for Ruby 2.5.0.

3.3.9 - 2017-10-27

• Fixed bug where empty strings were sometimes marked as invalid.

3.3.8 - 2017-10-04

• Fixed Rail mimic precision bug.

3.3.7 - 2017-10-02

• Handle invalid unicode characters better for single byte strings.

• Parsers for empty strings handle errors more consistently.

3.3.6 - 2017-09-22

• Numerous fixes and cleanup to support Ruby 2.4.2.

3.3.5 - 2017-08-11

• Fixed a memory error when using rails string encoding of certain unicode characters.

Commits

• bf3e8fa Ready for merge
• 0831df0 more restrictive test
• 319c50b First attempt at ActiceRecord::Result
• a81efb8 frame from rails results dump
• d5d4e31 no memset with zero length
• fe10a28 Add trace for calls to to_json and as_json
• 2f5d75f Fix zero char short string issue
• d6db134 Rails dump trace
• 5849eea Trace load
• 31fc46c Trace dump implemented
• Additional commits viewable in compare view

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