Update warning requirement from ^3.0.0 to ^4.0.3

[dependabot-preview]

Updates the requirements on warning to permit the latest version.

Release notes

Sourced from warning's releases.

v4.0.3

• chore(release): v4.0.3 (3c44be7)
• docs(CHANGELOG): v4.0.3 (8809fa6)
• fix: incorrect formatting of message with arguments (b188176)

Changelog

Sourced from warning's changelog.

4.0.3 (2019-02-09)

Bug Fixes

• incorrect formatting of message with arguments (b188176)

4.0.2 (2018-08-17)

Bug Fixes

• use jest instead of tap: tap is a PITA to debug (c4c026b)
• remove [provides](https://github.com/provides)Module annotation (1d808f1)

Change Log

All notable changes to this project will be documented in this file.
See Conventional Commits for commit guidelines.

4.0.1 (2018-05-30)

Bug Fixes

• add var printWarning = to comply with ES5 strict mode (677dcfa), closes #25

4.0.0 (2018-05-22)

Bug Fixes

• Remove "browser" version (521f5f5), closes #18 /github-redirect.dependabot.com/facebook/fbjs/pull/86#issuecomment-285204734
• Update warning to use the latest version from facebook/fbjs (0572ddd)

Chores

• LICENSE: Change from BSD modified to MIT (5a63a1b)

BREAKING CHANGES

... (truncated)

Commits

• See full diff in compare view

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[coveralls]

Coverage remained the same at 71.102% when pulling 20e6fc5 on dependabot/npm_and_yarn/warning-tw-4.0.3 into 2209f4c on master.