Update gatsby in /docs from 1.9.188 to 1.9.193

[dependencies]

Dependencies.io has updated gatsby (a npm dependency in /docs) from "1.9.188" to "1.9.193".

1.9.193

No content found. Please open an issue at https://github.com/dependencies-io/support if you think this content could have been found.

[codecov]

Codecov Report

Merging #2973 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #2973   +/-   ##
=======================================
  Coverage   37.37%   37.37%           
=======================================
  Files         426      426           
  Lines        9151     9151           
  Branches      865      851   -14     
=======================================
  Hits         3420     3420           
- Misses       5215     5238   +23     
+ Partials      516      493   -23

Impacted Files	Coverage Δ
app/vue/src/server/utils.js	0% <0%> (-100%)	⬇️
app/react/src/server/config/babel.js	0% <0%> (-100%)	⬇️
lib/ui/src/modules/ui/libs/filters.js	48.64% <0%> (ø)	⬆️
...react-native/src/manager/components/PreviewHelp.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/addon_panel.js	23.52% <0%> (ø)	⬆️
lib/core/src/server/build-dev.js	0% <0%> (ø)	⬆️
lib/core/src/client/manager/index.js	0% <0%> (ø)	⬆️
lib/core/src/client/preview/config_api.js	46.55% <0%> (ø)	⬆️
lib/core/src/server/build-static.js	0% <0%> (ø)	⬆️
lib/ui/src/modules/ui/containers/stories_panel.js	27.02% <0%> (ø)	⬆️
... and 63 more

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