Implement pex3 lock sync. #2512

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	24m 50s
tox -e py312-pip24_0-integration	24m 55s
./dtox.sh -e py27-pip20	12m 9s
./dtox.sh -e py37-pip20	16m 25s
./dtox.sh -e py311-pip20	16m 16s
./dtox.sh -e py311-pip22_3_1	16m 24s
./dtox.sh -e py311-pip23_1_2	16m 20s
./dtox.sh -e py312-pip24_0	15m 42s
./dtox.sh -e py313-pip24_0_patched	14m 50s
./dtox.sh -e pypy310-pip20	22m 38s
./dtox.sh -e pypy310-pip22_3_1	10m 22s
./dtox.sh -e pypy310-pip23_1_2	6m 51s
./dtox.sh -e py27-pip20-integration	22m 21s
./dtox.sh -e py37-pip22_3_1-integration	22m 40s
./dtox.sh -e py37-pip23_1_2-integration	22m 39s
./dtox.sh -e py311-pip20-integration	22m 40s
./dtox.sh -e py311-pip22_3_1-integration	22m 40s
./dtox.sh -e py311-pip23_1_2-integration	22m 40s
./dtox.sh -e py312-pip24_0-integration	22m 39s
./dtox.sh -e py313-pip24_0_patched-integration	22m 40s
./dtox.sh -e pypy310-pip20-integration	22m 45s
./dtox.sh -e pypy310-pip22_3_1-integration	10m 19s
./dtox.sh -e pypy310-pip23_1_2-integration	6m 46s
Gather Final Status	1s
	7h 4m 28s

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