Restyle fix(deps): update dependency gojs to v2.0.18

[restyled-io]

Automated style fixes for #167, created by Restyled.

The following restylers made fixes:

• jq

To incorporate these changes, merge this Pull Request into the original. We
recommend using the Squash or Rebase strategies.

NOTE: As work continues on the original Pull Request, this process will
re-run and update (force-push) this Pull Request with updated style fixes as
necessary. If the style is fixed manually at any point (i.e. this process finds
no fixes to make), this Pull Request will be closed automatically.

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[renovate]

Autoclosing Skipped

This PR has been flagged for autoclosing, however it is being skipped due to the branch being already modified. Please close/delete it manually or report a bug if you think this is in error.

[codecov-io]

Codecov Report

Merging #239 into renovate/gojs-2.x will not change coverage.
The diff coverage is n/a.

@@                Coverage Diff                 @@
##           renovate/gojs-2.x     #239   +/-   ##
==================================================
  Coverage              92.85%   92.85%           
==================================================
  Files                     51       51           
  Lines                    490      490           
  Branches                  37       37           
==================================================
  Hits                     455      455           
  Misses                    27       27           
  Partials                   8        8

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