Tests

Update Pyomo requirement to 6.8.0 release #6864

Job	Run time
Check Spelling	8s
Check Spelling	8s
Check code formatting (Black)	33s
Check code formatting (Black)	33s
Compatibility tests	4m 41s
Compatibility tests	4m 41s
Build Sphinx docs	5m 33s
Build Sphinx docs	5m 33s
Pylint	4m 27s
Pylint	4m 27s
pytest (py3.9/linux)	15m 0s
pytest (py3.9/linux)	15m 0s
pytest (py3.9/win64)	25m 41s
pytest (py3.9/win64)	26m 51s
pytest (py3.10/linux)	13m 1s
pytest (py3.10/linux)	13m 1s
pytest (py3.10/win64)	27m 19s
pytest (py3.10/win64)	27m 19s
pytest (py3.11/linux)	18m 59s
pytest (py3.11/linux)	18m 59s
pytest (py3.11/win64)	35m 39s
pytest (py3.11/win64)	35m 39s
pytest (py3.12/linux)	11m 3s
pytest (py3.12/linux)	11m 3s
pytest (py3.12/win64)	22m 53s
pytest (py3.12/win64)	22m 53s
Upload coverage report (Codecov)	0s
Upload coverage report (Codecov) (linux)	8s
Upload coverage report (Codecov) (win64)	9s
	6h 11m 21s

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