Fix multiple migration heads

[ericcccsliu]

Pull Request

Description

My last PR inadvertently caused multiple migration heads, which I resolved by changingdown_revision labels accordingly.

How Has This Been Tested?

• [x] Passes tests locally

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [x] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[codecov[bot]]

Codecov Report

Merging #71 (ca71f3d) into main (a133938) will increase coverage by 0.06%. The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main      #71      +/-   ##
==========================================
+ Coverage   93.39%   93.45%   +0.06%     
==========================================
  Files           9        9              
  Lines         212      214       +2     
==========================================
+ Hits          198      200       +2     
  Misses         14       14              

Impacted Files	Coverage Δ
pvsite_datamodel/__init__.py	100.00% <100.00%> (ø)
pvsite_datamodel/sqlmodels.py	100.00% <100.00%> (ø)

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