Update all npm packages to latest versions.

[mramato]

Closes #7536 and also updates some other packages greenkeeper recently reminded us about.

[cesium-concierge]

Thanks for the pull request @mramato!

• ✔️ Signed CLA found.
• ❔ CHANGES.md was not updated.
  • If this change updates the public API in any way, please add a bullet point to CHANGES.md.
• ❔ Unit tests were not updated.
  • Make sure you've updated tests to reflect your changes, added tests for any new code, and ran the code coverage tool.

Reviewers, don't forget to make sure that:

• Cesium Viewer works.
• Works in 2D/CV.
• Works (or fails gracefully) in IE11.

[mramato]

@ggetz since you found the original eslint issue, I figured you were a good person to review this.

[mramato]

Bump. Please get this merged ASAP.

[hpinkos]

👍 thanks!