Update all Yarn dependencies (2019-10-23)

[depfu[bot]]

This is your daily update of all Yarn dependencies. Please take a good look at what changed and the test results before merging this pull request.

What changed?

✳️ eslint (5.16.0 → 6.5.1, major) · Repo · Changelog · Release · Diff

✳️ gatsby (2.15.36 → 2.17.0, minor) · Repo · Changelog

✳️ contentful-import (7.6.0 → 7.6.1, patch) · Repo · Release · Diff

✳️ gatsby-plugin-netlify (2.1.21 → 2.1.22, patch) · Repo · Changelog

✳️ gatsby-source-contentful (2.1.49 → 2.1.50, patch) · Repo · Changelog

---

Depfu will only send you the next scheduled PR once you merge or close this one.

All Depfu comment commands

@​depfu refresh

Rebases against your default branch and redoes this update

@​depfu merge

Merges this PR once your tests are passing and conflicts are resolved

@​depfu close

Closes this PR and deletes the branch

@​depfu reopen

Restores the branch and reopens this PR (if it's closed)

[iammatthias]

@​depfu refresh