Bump python-multipart from 0.0.22 to 0.0.26 in /Chapter05/api-gateway #40

Job	Run time
detect-projects	6s
lint-and-test (Chapter01/platform-home)	13s
lint-and-test (Chapter07/sitters-catalog)	14s
lint-and-test (Chapter05/api-gateway)	14s
lint-and-test (Chapter02/parents-portal)	16s
lint-and-test (Chapter04/decoupled-marketplace-api)	13s
lint-and-test (Chapter09/realtime-marketplace-api)	14s
lint-and-test (Chapter08/secured-api)	12s
lint-and-test (Chapter03/reservation-service)	18s
lint-and-test (Chapter10/support-chatbot-api)	14s
lint-and-test (Chapter06/persistent-marketplace-api)	12s
	2m 26s

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