chore: remove is-ci in favor of ci-info

[mrazauskas]

Summary

Just another tiny improvement. Apparently, to do its job, is-ci is simply calling ci-info.

Using ci-info directly removes one micro library from the dependency tree. This is the only improvement introduced by this PR. (Also @types/is-ci becomes unnecessary.)

I was sure that process.env.CI ? true : false would be enough to detect CI. Was surprised to see a dependency. So it made me curious to look inside.

Test plan

I updated mocks in unit tests. The rest should work.

[SimenB]

works for me 🙂 Thanks!

[codecov-commenter]

Codecov Report

Merging #11973 (d0332d0) into main (9d737d7) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main   #11973   +/-   ##
=======================================
  Coverage   68.74%   68.74%           
=======================================
  Files         323      323           
  Lines       16649    16649           
  Branches     4805     4805           
=======================================
  Hits        11445    11445           
  Misses       5171     5171           
  Partials       33       33           

Impacted Files	Coverage Δ
packages/jest-config/src/Defaults.ts	100.00% <ø> (ø)
packages/jest-util/src/isInteractive.ts	100.00% <ø> (ø)

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