update doctest.yml to install control #1003

Job	Run time
Py3.10; no Slycot; no Pandas; no CVXOPT	5m 47s
Py3.10; no Slycot; no Pandas; conda CVXOPT	6m 1s
Py3.10; conda Slycot; no Pandas; no CVXOPT	5m 58s
Py3.10; conda Slycot; no Pandas; conda CVXOPT	6m 12s
Py3.12; no Slycot; no Pandas; no CVXOPT	6m 16s
Py3.12; no Slycot; no Pandas; conda CVXOPT	6m 40s
Py3.12; conda Slycot; no Pandas; no CVXOPT	6m 40s
Py3.12; conda Slycot; no Pandas; conda CVXOPT	7m 4s
Py3.12; conda Slycot; conda Pandas; conda CVXOPT ; QtAgg	7m 10s
Finalize parallel coveralls	2s
	57m 50s

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