Update gatsby in /docs from 1.9.135 to 1.9.138

[dependencies]

Dependencies.io has updated gatsby (a npm dependency in /docs) from "1.9.135" to "1.9.138".

1.9.138

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

1.9.137

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

1.9.136

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 #2497 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff            @@
##           master    #2497    +/-   ##
========================================
  Coverage   16.87%   16.87%            
========================================
  Files         307      307            
  Lines        7792     7792            
  Branches      781      919   +138     
========================================
  Hits         1315     1315            
+ Misses       5844     5749    -95     
- Partials      633      728    +95

Impacted Files	Coverage Δ
...codemod/src/transforms/update-organisation-name.js	40.62% <0%> (ø)	⬆️
addons/info/src/components/Story.js	30.8% <0%> (ø)	⬆️
lib/ui/src/modules/api/index.js	0% <0%> (ø)	⬆️
...react-native/src/manager/components/PreviewHelp.js	0% <0%> (ø)	⬆️
addons/jest/src/components/Indicator.js	0% <0%> (ø)	⬆️
addons/a11y/src/components/Report/Info.js	0% <0%> (ø)	⬆️
...mments/src/manager/components/CommentItem/index.js	0% <0%> (ø)	⬆️
...mments/src/manager/components/CommentItem/style.js	0% <0%> (ø)	⬆️
lib/codemod/src/transforms/move-buildin-addons.js	46.87% <0%> (ø)	⬆️
addons/knobs/src/components/types/Array.js	29.72% <0%> (ø)	⬆️
... and 47 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update a618105...f134038. Read the comment docs.