Update dependency prettier-eslint to v9

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
prettier-eslint	devDependencies	major	8.8.2 -> 9.0.0

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Release Notes

prettier/prettier-eslint

v9.0.0

Compare Source

Bug Fixes

• Add proper parser loading for vue (668282f)
• Don't overwrite parser if provided by user (deb9d48)
• failed CI due to prettier upgrade (2433f68)

chore

• upgrade to eslint@5 (58f84ee)

BREAKING CHANGES

• eslint 5+ is now required

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[codecov-io]

Codecov Report

Merging #98 into master will not change coverage.
The diff coverage is n/a.

@@          Coverage Diff          @@
##           master    #98   +/-   ##
=====================================
  Coverage     100%   100%           
=====================================
  Files           1      1           
  Lines          41     41           
  Branches        3      3           
=====================================
  Hits           41     41

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