Finalize release 6.7.0

[blnicho]

Summary/Motivation:

This PR finalizes main for the 6.7.0 release

Changes proposed in this PR:

• Finalize release of Pyomo 6.7.0

Legal Acknowledgement

By contributing to this software project, I have read the contribution guide and agree to the following terms and conditions for my contribution:

1. I agree my contributions are submitted under the BSD license.
2. I represent I am authorized to make the contributions and grant the license. If my employer has rights to intellectual property that includes these contributions, I represent that I have received permission to make contributions and grant the required license on behalf of that employer.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (91729ba) 88.08% compared to head (8de2190) 88.07%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3051      +/-   ##
==========================================
- Coverage   88.08%   88.07%   -0.02%     
==========================================
  Files         774      774              
  Lines       91496    91496              
==========================================
- Hits        80596    80581      -15     
- Misses      10900    10915      +15     

Flag	Coverage Δ
linux	85.43% <100.00%> (-0.02%)	⬇️
osx	75.41% <50.00%> (-0.02%)	⬇️
other	85.61% <100.00%> (-0.02%)	⬇️
win	82.74% <50.00%> (-0.01%)	⬇️

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