test

Enable decimal benchmarks in the test suite (MANIFEST) #2419

Job	Run time
ubuntu-24.04-arm - 3.10	6m 32s
ubuntu-24.04-arm - 3.11	7m 34s
ubuntu-24.04-arm - 3.12	7m 59s
ubuntu-latest - 3.11	7m 47s
ubuntu-latest - 3.14 free-threading	8m 50s
ubuntu-latest - 3.15-dev	9m 33s
ubuntu-24.04-arm - 3.14 free-threading	7m 33s
ubuntu-24.04-arm - 3.13	7m 31s
ubuntu-24.04-arm - 3.14	7m 31s
ubuntu-latest - 3.14	7m 57s
macos-latest - 3.14	11m 23s
ubuntu-latest - pypy-3.11	14m 25s
ubuntu-latest - 3.13	8m 15s
ubuntu-latest - 3.12	8m 37s
windows-latest - 3.14	13m 27s
ubuntu-latest - 3.10	7m 49s
ubuntu-latest - 3.15-dev free-threading	9m 13s
	2h 31m 56s

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