Bump proc-macro2 from 1.0.89 to 1.0.92 #278

Job	Run time
set-image	1s
checks	1m 29s
clippy	1m 38s
bench-rust-nightly (bit-vec)	18m 24s
fmt	58s
bench-rust-nightly (bytes)	17m 41s
miri (bit-vec)	3h 44m 9s
tests	3m 51s
bench-rust-nightly (generic-array)	17m 13s
miri (bytes)	3m 38s
bench-rust-nightly (derive)	18m 48s
miri (generic-array)	3m 49s
bench-rust-nightly (max-encoded-len)	17m 14s
miri (arbitrary)	3m 35s
build-linux-ubuntu-amd64	1m 24s
publish-dry-run	1m 15s
	5h 35m 7s

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