chore: update to Rust 1.86.0 #5219

Job	Run time
Find path changes	19s
Rust lints	5m 42s
Turborepo Integration (ubuntu-latest)	11m 48s
`basic` example	0s
Turborepo Rust testing on ubuntu	9m 9s
Turborepo Integration (macos-13)	32m 30s
Turborepo Rust testing on macos	32m 16s
Turborepo rust check	4m 55s
Turborepo Integration (windows-latest)	28m 14s
Turborepo Rust testing on windows	18m 23s
`kitchen-sink` example	0s
`non-monorepo` example	0s
`with-svelte` example	0s
`with-tailwind` example	0s
Turborepo Test Summary	1s
Cleanup / cleanup	2s
	2h 23m 19s

Provide feedback