ENH: Add HalfYear offsets #22149

Job	Run time
Pyodide build	22m 54s
Linux-32-bit	18m 21s
Linux-Musl	16m 43s
python-freethreading	22m 52s
python-dev (macOS-13)	18m 36s
python-dev (macOS-14)	16m 58s
python-dev (ubuntu-22.04)	20m 11s
python-dev (windows-latest)	22m 15s
macos-13 actions-310.yaml	31m 49s
macos-13 actions-311.yaml	32m 7s
macos-13 actions-312.yaml	29m 36s
macos-14 actions-310.yaml	22m 17s
macos-14 actions-311.yaml	18m 20s
macos-14 actions-312.yaml	20m 6s
windows-latest actions-311.yaml	37m 7s
windows-latest actions-312.yaml	46m 50s
windows-latest actions-310.yaml	32m 28s
Minimum Versions	23m 28s
Future infer strings (without pyarrow)	41m 13s
Locale: zh_CN	24m 50s
Locale: it_IT	23m 54s
Downstream Compat	5m 48s
Numpy Dev	18m 40s
Pyarrow Nightly	20m 47s
Future infer strings	51m 14s
Pypy	1m 24s
ubuntu-22.04 actions-310.yaml	47m 41s
ubuntu-22.04 actions-311.yaml	44m 23s
ubuntu-22.04 actions-312.yaml	48m 26s
ubuntu-24.04-arm actions-311.yaml	40m 56s
ubuntu-24.04-arm actions-312.yaml	45m 18s
ubuntu-24.04-arm actions-310.yaml	44m 3s
	15h 11m 35s

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