Add support for `--pip-version 24.3`. (#2580) #3136

Job	Run time
Check GitHub Organization	1s
tox -e py313-pip24_3	14m 48s
./dtox.sh -e py27-pip20	9m 24s
tox -e py313-pip24_3-integration --shard 1/2	23m 53s
./dtox.sh -e py38-pip22_3_1	17m 55s
tox -e py313-pip24_3-integration --shard 2/2	28m 31s
./dtox.sh -e py311-pip23_3_2	19m 2s
./dtox.sh -e py313-pip24_3	13m 33s
tox -e format-check,lint-check,typecheck,vendor-check,package,docs	8m 22s
./dtox.sh -e py314-pip24_3	14m 30s
./dtox.sh -e pypy310-pip24_3	26m 59s
./dtox.sh -e py27-pip20-integration	26m 52s
./dtox.sh -e py38-pip22_3_1-integration --shard 1/2	28m 7s
./dtox.sh -e py38-pip22_3_1-integration --shard 2/2	28m 53s
./dtox.sh -e py311-pip23_3_2-integration --shard 1/2	28m 8s
./dtox.sh -e py311-pip23_3_2-integration --shard 2/2	28m 59s
./dtox.sh -e py313-pip24_3-integration --shard 1/2	25m 42s
./dtox.sh -e py313-pip24_3-integration --shard 2/2	27m 22s
./dtox.sh -e py314-pip24_3-integration --shard 1/2	22m 51s
./dtox.sh -e py314-pip24_3-integration --shard 2/2	26m 48s
./dtox.sh -e pypy310-pip24_3-integration --shard 1/2	44m 9s
./dtox.sh -e pypy310-pip24_3-integration --shard 2/2	49m 25s
Gather Final Status	1s
	8h 34m 15s

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