bump version to 1.9.0

[colin-rogers-dbt]

resolves #

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
• 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

[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.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 0% with 1 line in your changes missing coverage. Please review.

Project coverage is 67.35%. Comparing base (16b683e) to head (d098ba1).

Files with missing lines	Patch %	Lines
dbt_common/__about__.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #194   +/-   ##
=======================================
  Coverage   67.35%   67.35%           
=======================================
  Files          52       52           
  Lines        3370     3370           
=======================================
  Hits         2270     2270           
  Misses       1100     1100           

Flag	Coverage Δ
unit	67.35% <0.00%> (ø)

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