Tests

ci: Install `tcl-dev` when building Comdb2 #983

Job	Run time
Build bloomberg-comdb2 from source	10m 25s
Build python-comdb2 source distribution	1m 7s
Test suite (3.10)	40s
Test suite (3.13)	36s
Test suite (3.8)	41s
Test suite (3.11)	28s
Test suite (3.12)	49s
Test suite (3.14-dev)	50s
Test suite (3.9)	42s
	16m 18s

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