BUG: Copy attrs on pd.merge() (#60357) #24143

Job	Run time
Linux-Musl	15m 33s
Linux-32-bit	19m 0s
python-dev	0s
Pyodide build	23m 48s
macos-13 actions-312.yaml	47m 9s
macos-14 actions-310.yaml	30m 19s
macos-13 actions-310.yaml	29m 52s
windows-latest actions-311.yaml	34m 20s
macos-14 actions-312.yaml	31m 25s
windows-latest actions-310.yaml	34m 4s
windows-latest actions-313.yaml	41m 3s
macos-14 actions-311.yaml	17m 56s
windows-latest actions-312.yaml	39m 32s
ubuntu-24.04 actions-312.yaml	43m 48s
macos-13 actions-311.yaml	39m 35s
macos-14 actions-313.yaml	25m 6s
Locale: zh_CN	24m 11s
Freethreading	21m 3s
macos-13 actions-313.yaml	24m 18s
ubuntu-24.04 actions-311.yaml	45m 32s
Locale: it_IT	23m 32s
ubuntu-24.04-arm actions-313.yaml	37m 8s
Pyarrow Nightly	20m 45s
ubuntu-24.04 actions-313.yaml	48m 14s
ubuntu-24.04-arm actions-310.yaml	35m 54s
Future infer strings (without pyarrow)	38m 49s
Downstream Compat	5m 21s
ubuntu-24.04-arm actions-312.yaml	34m 24s
Minimum Versions	22m 52s
ubuntu-24.04-arm actions-311.yaml	36m 27s
Numpy Dev	16m 24s
Pypy	1m 18s
ubuntu-24.04 actions-310.yaml	46m 22s
Future infer strings	44m 36s
	16h 39m 40s

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