Implement pex3 lock sync. #2507

Job	Run time
Check GitHub Organization	1s
tox -e format-check,lint-check,typecheck,vendor-check,package,docs	5m 57s
tox -e py312-pip24_0	27m 7s
tox -e py312-pip24_0-integration	47m 35s
./dtox.sh -e py27-pip20	11m 59s
./dtox.sh -e py37-pip20	16m 45s
./dtox.sh -e py311-pip20	15m 44s
./dtox.sh -e py311-pip22_3_1	15m 53s
./dtox.sh -e py311-pip23_1_2	16m 9s
./dtox.sh -e py312-pip24_0	14m 50s
./dtox.sh -e py313-pip24_0_patched	16m 8s
./dtox.sh -e pypy310-pip20	21m 27s
./dtox.sh -e pypy310-pip22_3_1	9m 25s
./dtox.sh -e pypy310-pip23_1_2	9m 20s
./dtox.sh -e py27-pip20-integration	21m 14s
./dtox.sh -e py37-pip22_3_1-integration	21m 31s
./dtox.sh -e py37-pip23_1_2-integration	21m 31s
./dtox.sh -e py311-pip20-integration	21m 28s
./dtox.sh -e py311-pip22_3_1-integration	21m 31s
./dtox.sh -e py311-pip23_1_2-integration	21m 28s
./dtox.sh -e py312-pip24_0-integration	21m 31s
./dtox.sh -e py313-pip24_0_patched-integration	21m 30s
./dtox.sh -e pypy310-pip20-integration	21m 28s
./dtox.sh -e pypy310-pip22_3_1-integration	5m 42s
./dtox.sh -e pypy310-pip23_1_2-integration	5m 36s
Gather Final Status	0s
	7h 12m 50s

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