Update dependency com_github_bazelbuild_buildtools to v3 (master)

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
com_github_bazelbuild_buildtools	http_archive	major	0.29.0 -> 3.0.0

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Release Notes

bazelbuild/buildtools

v3.0.0

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• Improved multi-file analysers
  • Warnings for macro functions without name parameters.

v2.2.1

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Fixed NPM distribution

v2.2.0

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• Improved bzl-visibility warnings for files loaded from a fully qualified path
  • Nodejs bindings

v2.0.0

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• Stabiliity fixes
  • Disallowed implicit strings concatenation
  • Buildozer: replace_load command

v1.0.0

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Bug fixes and stability improvements

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[codecov-io]

Codecov Report

Merging #1295 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1295   +/-   ##
=======================================
  Coverage   54.14%   54.14%           
=======================================
  Files          42       42           
  Lines        4375     4375           
=======================================
  Hits         2369     2369           
  Misses       1750     1750           
  Partials      256      256           

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