Add updated dbt diagram for readme

[amy-byrum]

Included databricks logo, updated dbt logo & fonts

resolves #

Description

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• 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 added information about my change to be included in the CHANGELOG.

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[jtcohen6]

@cla-bot check

[cla-bot]

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

[ChenyuLInx]

This is really hard to see in dark mode, should we consider adding a background?

[amy-byrum]

Good catch, I swapped this out for the version w/ background