Use new "enable" CIBW option #156

Job	Run time
Build ijson and run unit tests (ubuntu-latest, 3.7)	29s
Build ijson and run unit tests (ubuntu-latest, 3.8)	23s
Build ijson and run unit tests (ubuntu-latest, 3.9)	26s
Build ijson and run unit tests (ubuntu-latest, 3.10)	20s
Build ijson and run unit tests (ubuntu-latest, 3.11)	33s
Build ijson and run unit tests (ubuntu-latest, 3.12)	40s
Build ijson and run unit tests (ubuntu-latest, 3.13-dev)	24s
Build ijson and run unit tests (windows-2019, 3.7)	52s
Build ijson and run unit tests (windows-2019, 3.8)	48s
Build ijson and run unit tests (windows-2019, 3.9)	50s
Build ijson and run unit tests (windows-2019, 3.10)	1m 17s
Build ijson and run unit tests (windows-2019, 3.11)	1m 17s
Build ijson and run unit tests (windows-2019, 3.12)	1m 21s
Build ijson and run unit tests (windows-2019, 3.13-dev)	1m 52s
Build ijson and run unit tests (macos-12, 3.7)	28s
Build ijson and run unit tests (macos-12, 3.8)	40s
Build ijson and run unit tests (macos-12, 3.9)	26s
Build ijson and run unit tests (macos-12, 3.10)	26s
Build ijson and run unit tests (macos-12, 3.11)	28s
Build ijson and run unit tests (macos-12, 3.12)	29s
Build ijson and run unit tests (macos-12, 3.13-dev)	1m 4s
Build ijson and run unit tests (ubuntu-latest, pypy3.10)	36s
	16m 9s

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