Tests

Merge branch 'qutip:master' into bosonic_fitting #135

Job	Run time
Verify Towncrier entry added	9s
ubuntu-latest, python3.11, defaults	20m 29s
ubuntu-latest, python3.9, Old setup	18m 28s
ubuntu-latest, python3.10, no mkl	20m 56s
ubuntu-latest, python3.10, no cython	19m 41s
ubuntu-latest, python3.11, Python 3.11	21m 19s
ubuntu-latest, python3.12, Python 3.12	23m 27s
macos-latest, python3.11, macos	27m 36s
windows-latest, python3.11, Windows	27m 33s
Finalise coverage reporting	16s
	2h 59m 54s

Provide feedback