Add aranke to core committers

[aranke]

resolves #6345

Description

Checklist

• I have read the contributing guide and understand what's expected of me
• I have signed the CLA
• I have run this code in development and it appears to resolve the stated issue
• This PR includes tests, or tests are not required/relevant for this PR
• I have opened an issue to add/update docs, or docs changes are not required/relevant for this PR
• I have run changie new to create a changelog entry

[cla-bot]

Thank you for your pull request and welcome to our community. We could not parse the GitHub identity of the following contributors: Kshitij Aranke.
This is most likely caused by a git client misconfiguration; please make sure to:

1. check if your git client is configured with an email to sign commits git config --list | grep email
2. If not, set it up using git config --global user.email [email protected]
3. Make sure that the git commit email is configured in your GitHub account settings, see https://github.com/settings/emails

[github-actions]

Thank you for your pull request! We could not find a changelog entry for this change. For details on how to document a change, see the contributing guide.

[aranke]

@cla-bot check

[cla-bot]

The cla-bot has been summoned, and re-checked this pull request!

[emmyoop]

Looks good!

Excited for the day this can stop being manual - changes are done in dbt-core but can't be merged until corresponding changes get made to the version-bump workflow.

[aranke]

@emmyoop Great, please let me know if I can help in any way!