Bump cross-fetch from 3.0.6 to 3.1.4

[dependabot-preview]

Bumps cross-fetch from 3.0.6 to 3.1.4.

Release notes

Sourced from cross-fetch's releases.

v3.1.4

🐞 fixed typescript errors.

v3.1.3

🐞 fixed typescript compilation error causing #95, #101, #102.

v3.1.2

🐞 added missing Headers interface augmentation from lib.dom.iterable.d.ts (#97)

v3.1.1

🐞 fixed missing fetch api types from constructor signatures #96 (thanks @​jstewmon)

v3.1.0

⚡️ improved TypeScript support with own fetch API type definitions (thanks @​jstewmon) ⚡️ set fetch.ponyfill to true when custom ponyfill implementation is used. 💡 set the same fetch API test suite to run against node-fetch, whatwg-fetch and native fetch.

Commits

• 7e4b657 chore(release): 3.1.4
• 47bc898 chore(release): 3.1.4-alpha.0
• 3fce389 fix: reverted index.d.ts to its original state (prior 3.1.0)
• ddfe452 chore(release): 3.1.3
• 0a35f69 chore: updated dev dependencies
• 6c7c5d3 chore: removed target from typescript example
• 7c6a3f4 chore(release): 3.1.3-alpha.6
• 4e32613 chore: improved index.d.ts
• d7210dc chore(release): 3.1.3-alpha.5
• 69b7d5b chore: improved typescript example
• Additional commits viewable in compare view

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[coveralls]

Coverage remained the same at 56.849% when pulling 683502c on dependabot/npm_and_yarn/cross-fetch-3.1.4 into 2598b23 on master.

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