Bump proc-macro2 from 1.0.73 to 1.0.74 #26

Job	Run time
set-image	1s
clippy	1m 37s
checks	1m 30s
bench-rust-nightly (bit-vec)	17m 56s
miri (bit-vec)	48m 43s
bench-rust-nightly (bytes)	17m 4s
tests	2m 49s
miri (bytes)	2m 53s
bench-rust-nightly (generic-array)	17m 1s
miri (generic-array)	2m 57s
bench-rust-nightly (derive)	17m 2s
bench-rust-nightly (max-encoded-len)	17m 1s
miri (arbitrary)	2m 51s
build-linux-ubuntu-amd64	1m 23s
publish-dry-run	1m 17s
	2h 32m 5s

Provide feedback