Add a note about conda env to dev doc #15000

Job	Run time
Type check	2m 7s
Format check	7s
Doc test	2m 21s
Changed files test	1m 7s
Notebook formatting	15s
Lint check	2m 48s
Packaging test	1m 22s
Misc check	8s
Shell check	8s
Build protos	14s
Coverage check	11m 24s
Isolated pytest Ubuntu	7m 24s
Notebook Tests against PR	9m 33s
Pytest MacOS (3.10)	10m 54s
Changed Notebooks Isolated Test against Cirq stable (partition-0)	48s
Pytest MacOS (3.11)	6m 10s
Changed Notebooks Isolated Test against Cirq stable (partition-1)	47s
Pytest MacOS (3.12)	11m 32s
Check consistency of requirements	30s
Changed Notebooks Isolated Test against Cirq stable (partition-2)	46s
Changed Notebooks Isolated Test against Cirq stable (partition-3)	44s
Bundle file consistency	44s
Pytest Ubuntu (3.10)	7m 42s
Typescript tests coverage	32s
Pytest Ubuntu (3.11)	7m 1s
Pytest Ubuntu (3.12)	7m 24s
Typescript lint check	30s
Typescript tests	37s
Pytest Windows (3.10)	11m 6s
Pytest Windows (3.11)	16m 35s
Pytest Windows (3.12)	18m 15s
	2h 21m 35s

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