[backport 2.3.x] CI: fix wrong syntax in CI env yml files (mamba 2.0 … #19959

Job	Run time
Linux-32-bit	20m 5s
Linux-Musl	17m 52s
python-dev (macOS-13)	26m 7s
python-dev (macOS-14)	13m 34s
python-dev (ubuntu-22.04)	24m 27s
python-dev (windows-latest)	27m 7s
macos-13 actions-310.yaml	1h 1m 23s
macos-13 actions-311.yaml	43m 23s
macos-13 actions-312.yaml	42m 50s
macos-13 actions-39.yaml	50m 21s
macos-14 actions-310.yaml	29m 18s
macos-14 actions-311.yaml	40m 58s
macos-14 actions-312.yaml	26m 4s
macos-14 actions-39.yaml	26m 21s
windows-latest actions-311.yaml	53m 15s
windows-latest actions-312.yaml	57m 53s
windows-latest actions-310.yaml	51m 23s
windows-latest actions-39.yaml	41m 47s
ubuntu-latest actions-310.yaml	1h 3m 15s
ubuntu-latest actions-311.yaml	57m 40s
Future infer strings (without pyarrow)	59m 19s
Copy-on-Write 3.10	40m 10s
Copy-on-Write 3.10 (warnings)	40m 16s
Locale: zh_CN	37m 55s
Copy-on-Write 3.11	38m 42s
Copy-on-Write 3.11 (warnings)	37m 51s
Locale: it_IT	38m 8s
Downstream Compat	6m 45s
Numpy Dev	23m 20s
Pyarrow Nightly	23m 18s
ubuntu-latest actions-312.yaml	47m 42s
Future infer strings	52m 0s
Copy-on-Write 3.12	42m 54s
ubuntu-latest actions-39.yaml	49m 36s
Copy-on-Write 3.9 (warnings)	29m 56s
Copy-on-Write 3.9	30m 15s
Pypy	8m 4s
Minimum Versions	28m 54s
	23h 30m 8s

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