Update dependency undici to v5.26.2 [SECURITY] - autoclosed #987

Job	Run time
lint	1m 18s
coverage	1m 18s
tests (core)	1m 25s
tests (plugin-hardhat)	1m 33s
tests (plugin-truffle)	1m 34s
tests (plugin-defender-hardhat)	1m 35s
	8m 43s

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