Move change description to Doc/whatsnew/3.14.rst #9

Job	Run time
Interpreter (Debug)	6m 45s
Free-Threaded (Debug)	9m 58s
i686-pc-windows-msvc/msvc (Debug)	15m 36s
i686-pc-windows-msvc/msvc (Release)	19m 59s
x86_64-pc-windows-msvc/msvc (Debug)	16m 57s
x86_64-pc-windows-msvc/msvc (Release)	21m 36s
aarch64-pc-windows-msvc/msvc (Debug)	5m 52s
aarch64-pc-windows-msvc/msvc (Release)	6m 11s
x86_64-apple-darwin/clang (Debug)	12m 7s
x86_64-apple-darwin/clang (Release)	14m 1s
aarch64-apple-darwin/clang (Debug)	8m 54s
aarch64-apple-darwin/clang (Release)	14m 0s
x86_64-unknown-linux-gnu/gcc (Debug)	7m 51s
x86_64-unknown-linux-gnu/gcc (Release)	17m 34s
x86_64-unknown-linux-gnu/clang (Debug)	7m 56s
x86_64-unknown-linux-gnu/clang (Release)	13m 37s
aarch64-unknown-linux-gnu/gcc (Debug)	1h 13m 23s
aarch64-unknown-linux-gnu/gcc (Release)	53m 56s
aarch64-unknown-linux-gnu/clang (Debug)	1h 4m 52s
aarch64-unknown-linux-gnu/clang (Release)	35m 53s
	7h 6m 58s

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