Update Rust crate proc-macro2 to v1.0.85 #29031

Job	Run time
pre-commit	53s
cargo fmt	17s
mkdocs	3m 0s
Determine changes	9s
python package	1m 45s
benchmarks	5m 7s
cargo build (release)	6m 17s
cargo clippy	2m 41s
cargo fuzz	4m 51s
cargo shear	26s
cargo test (wasm)	1m 48s
cargo test (linux)	4m 12s
cargo test (windows)	9m 26s
formatter instabilities and black similarity	4m 30s
test scripts	1m 30s
test ruff-lsp	22s
ecosystem	14m 43s
Fuzz the parser	5m 29s
	1h 7m 26s

Provide feedback