Added GitHub Actions support to CI detection

[Andarist]

is-ci package doesnt detect actions as CI. There is open PR to add support for them ( watson/ci-info#42 ), but unfortunately, it has not been merged for some time already.

[changeset-bot]

🦋 Changeset is good to go

Latest commit: 81d6a57

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[codecov]

Codecov Report

Merging #254 into master will decrease coverage by 0.06%.
The diff coverage is 0%.

@@            Coverage Diff             @@
##           master     #254      +/-   ##
==========================================
- Coverage   81.18%   81.11%   -0.07%     
==========================================
  Files          44       45       +1     
  Lines        1201     1202       +1     
  Branches      276      277       +1     
==========================================
  Hits          975      975              
  Misses        216      216              
- Partials       10       11       +1

Impacted Files	Coverage Δ
...ckages/cli/src/commands/publish/publishPackages.ts	73.33% <ø> (ø)	⬆️
packages/cli/src/commands/publish/npm-utils.ts	5.97% <ø> (ø)	⬆️
packages/cli/src/utils/isCI.ts	0% <0%> (ø)

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