chore(deps-dev): bump gavel-spec from 3.0.2 to 4.0.0

[dependabot-preview]

Bumps gavel-spec from 3.0.2 to 4.0.0.

Release notes

Sourced from gavel-spec's releases.

v4.0.0

4.0.0 (2019-07-08)

Bug Fixes

• removes "@​stable" general tag (411239f)
• uses "I" instead of "you" (47831ab)
• uses inline gavel call in the validation step (1508dfb)

Features

• coordinates composable steps vocabulary (2a6035c)
• introduces unified validation result structure (884f80e)

BREAKING CHANGES

• Gavel validation result structure includes the next changes:

• Validity of an HTTP message and its fields is marked in valid property:

-result.isValid
-result.fields.body.isValid
+result.valid
+result.fields.body.valid

• HTTP message fields may include expected/actual values that represent end compared values:

result.fields.body.values.expected
result.fields.body.values.actual

• Each HTTP message field contains the "kind" enum property of values "text" and "json" representing the end value type:

result.fields.body.kind // "json"

• HTTP message fields no longer include the next properties:
  • validator
  • expectedType
  • `realType*
  • rawData

Commits

• b4deb63 Merge pull request #54 from apiaryio/13-unified-api
• 1508dfb fix: uses inline gavel call in the validation step
• 411239f fix: removes "@​stable" general tag
• 6b36d79 chore: provides body validation scenarios description
• 47831ab fix: uses "I" instead of "you"
• 132b9b9 chore: improves feature titles
• dfc373b chore: uses articles and shorter notation in gherkin steps
• cebc546 test: aligns Gherkin suites vocabulary
• 25b69a6 test: adds field validation features
• 2a6035c feat: coordinates composable steps vocabulary
• Additional commits viewable in compare view

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[honzajavorek]

@artem-zakharchenko How come this PR's tests pass when it should be breaking? 🤔

[artem-zakharchenko]

Update will be orchestrated manually in #221. Closing.

[dependabot-preview]

OK, I won't notify you again about this release, but will get in touch when a new version is available. If you'd rather skip all updates until the next major or minor version, let me know by commenting @dependabot ignore this major version or @dependabot ignore this minor version.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.