updated commit reference for v6.0.0 changelog #5204

[jithinkmatthew]

updated CHANGELOG.md file for v6.0.0 release, due to this 5204

Commits refered from this link
https://github.com/angular/protractor/commits/master

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[googlebot]

Thanks for your pull request. It looks like this may be your first contribution to a Google open source project (if not, look below for help). Before we can look at your pull request, you'll need to sign a Contributor License Agreement (CLA).

📝 Please visit https://cla.developers.google.com/ to sign.

Once you've signed (or fixed any issues), please reply here (e.g. I signed it!) and we'll verify it.

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What to do if you already signed the CLA

Individual signers

• It's possible we don't have your GitHub username or you're using a different email address on your commit. Check your existing CLA data and verify that your email is set on your git commits.

Corporate signers

• Your company has a Point of Contact who decides which employees are authorized to participate. Ask your POC to be added to the group of authorized contributors. If you don't know who your Point of Contact is, direct the Google project maintainer to go/cla#troubleshoot (Public version).
• The email used to register you as an authorized contributor must be the email used for the Git commit. Check your existing CLA data and verify that your email is set on your git commits.
• The email used to register you as an authorized contributor must also be attached to your GitHub account.

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[jithinkmatthew]

I signed it!

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CLAs look good, thanks!

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[googlebot]

CLAs look good, thanks!

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[cnishina]

Thank you so much. I generated these off of the selenium4 branch and did a release for 6 beta. During the release I moved these changes to the master branch and I guess the commit hash changed. Thank you for finding this and thank you for this PR.

[cnishina]

Squash merging this. The CircleCI and travis issues have nothing to do with the markdown file.