Implement pex3 lock sync. #2554

Job	Run time
Check GitHub Organization	1s
tox -e format-check,lint-check,typecheck,vendor-check,package,docs	5m 55s
tox -e py312-pip24_0	17m 20s
./dtox.sh -e py27-pip20	12m 6s
tox -e py312-pip24_0-integration	1h 6m 47s
./dtox.sh -e py37-pip20	3m 8s
./dtox.sh -e py311-pip20	16m 25s
./dtox.sh -e py311-pip22_3_1	16m 34s
./dtox.sh -e py311-pip23_1_2	15m 5s
./dtox.sh -e py312-pip24_0	11m 5s
./dtox.sh -e py313-pip24_0_patched	10m 49s
./dtox.sh -e pypy310-pip20	1m 27s
./dtox.sh -e pypy310-pip22_3_1	12s
./dtox.sh -e pypy310-pip23_1_2	1s
./dtox.sh -e py27-pip20-integration	21m 36s
./dtox.sh -e py37-pip22_3_1-integration	3m 5s
./dtox.sh -e py37-pip23_1_2-integration	1m 28s
./dtox.sh -e py311-pip20-integration	19m 12s
./dtox.sh -e py311-pip22_3_1-integration	19m 6s
./dtox.sh -e py311-pip23_1_2-integration	11m 8s
./dtox.sh -e py312-pip24_0-integration	9m 39s
./dtox.sh -e py313-pip24_0_patched-integration	9m 34s
./dtox.sh -e pypy310-pip20-integration	1m 24s
./dtox.sh -e pypy310-pip22_3_1-integration	1s
./dtox.sh -e pypy310-pip23_1_2-integration	1s
Gather Final Status	1s
	4h 33m 10s

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