security: bump minimum versions for python-multipart and starlette #1113

Job	Run time
checks / pre-commit	32s
checks / readme-snippets	16s
checks / test (3.11, lowest-direct, ubuntu-latest)	1m 5s
checks / test (3.10, locked, windows-latest)	2m 20s
checks / test (3.11, locked, windows-latest)	2m 24s
checks / test (3.10, locked, ubuntu-latest)	52s
checks / test (3.12, lowest-direct, windows-latest)	3m 38s
checks / test (3.11, lowest-direct, windows-latest)	2m 42s
checks / test (3.10, lowest-direct, windows-latest)	2m 20s
checks / test (3.10, lowest-direct, ubuntu-latest)	55s
checks / test (3.11, locked, ubuntu-latest)	51s
checks / test (3.12, locked, ubuntu-latest)	55s
checks / test (3.12, lowest-direct, ubuntu-latest)	1m 2s
checks / test (3.14, locked, windows-latest)	3m 27s
checks / test (3.13, locked, windows-latest)	2m 18s
checks / test (3.13, locked, ubuntu-latest)	49s
checks / test (3.13, lowest-direct, ubuntu-latest)	50s
checks / test (3.14, locked, ubuntu-latest)	2m 27s
checks / test (3.13, lowest-direct, windows-latest)	2m 35s
checks / test (3.14, lowest-direct, ubuntu-latest)	1m 26s
checks / test (3.14, lowest-direct, windows-latest)	2m 25s
checks / test (3.12, locked, windows-latest)	3m 21s
all-green	2s
	39m 32s

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