chore: Update prettier & its workflows

[wuweiweiwu]

Thanks for contributing to react-virtualized!

Before submitting a pull request, please complete the following checklist:

• The existing test suites (npm test) all pass
• For any new features or bug fixes, both positive and negative test cases have been added
• For any new features, documentation has been added
• For any documentation changes, the text has been proofread and is clear to both experienced users and beginners.
• Format your code with prettier (npm run prettier).
• Run the Flow typechecks (npm run typecheck).

Here is a short checklist of additional things to keep in mind before submitting:

• Please make sure your pull request description makes it very clear what you're trying to accomplish. If it's a bug fix, please also provide a failing test case (if possible). In either case, please add additional unit test coverage for your changes. :)
• Be sure you have notifications setup so that you'll see my code review responses. (I may ask you to make some adjustments before merging.)

[codecov-io]

Codecov Report

Merging #1455 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master    #1455   +/-   ##
=======================================
  Coverage   90.35%   90.35%           
=======================================
  Files          59       59           
  Lines        1742     1742           
=======================================
  Hits         1574     1574           
  Misses        168      168

Impacted Files	Coverage Δ
source/Grid/Grid.js	94.44% <ø> (ø)	⬆️
...e/Collection/utils/calculateSizeAndPositionData.js	92.3% <ø> (ø)	⬆️
source/Masonry/Masonry.js	95.45% <ø> (ø)	⬆️
source/Table/Table.js	88.39% <100%> (ø)	⬆️

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