Update base_model.py

[peterdudfield]

Pull Request

Description

Fix targets to target
pin ocf_datapipes to 2.3.1 until upgrades are made for 3.0.0

Helps with openclimatefix/PVNet-summation#13

How Has This Been Tested?

CI tests

• Yes

Checklist:

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

[codecov]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (48a282a) 50.85% compared to head (cf0c21c) 50.85%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
pvnet/models/base_model.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #110   +/-   ##
=======================================
  Coverage   50.85%   50.85%           
=======================================
  Files          26       26           
  Lines        1701     1701           
=======================================
  Hits          865      865           
  Misses        836      836           

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