PERF: CategoricalDtype.update_dtype (#59647) #18859

Job	Run time
Linux-32-bit	19m 18s
Linux-Musl	16m 50s
python-dev (macOS-13)	28m 49s
python-dev (macOS-14)	16m 17s
python-dev (ubuntu-22.04)	23m 22s
python-dev (windows-latest)	26m 5s
Pyodide build	25m 4s
python-freethreading	23m 45s
ubuntu-latest actions-310.yaml	48m 13s
Minimum Versions	26m 7s
ubuntu-latest actions-311.yaml	43m 22s
Future infer strings (without pyarrow)	46m 12s
Locale: zh_CN	27m 8s
Locale: it_IT	26m 51s
Downstream Compat	7m 32s
Numpy Dev	17m 5s
Pyarrow Nightly	20m 14s
ubuntu-latest actions-312.yaml	46m 46s
Future infer strings	53m 38s
Pypy	3m 45s
macos-13 actions-310.yaml	35m 53s
macos-13 actions-311.yaml	34m 58s
macos-13 actions-312.yaml	41m 53s
macos-14 actions-311.yaml	22m 56s
macos-14 actions-310.yaml	32m 22s
windows-latest actions-311.yaml	38m 6s
macos-14 actions-312.yaml	20m 50s
windows-latest actions-312.yaml	49m 32s
windows-latest actions-310.yaml	39m 22s
	14h 22m 15s

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