Bump syn from 2.0.52 to 2.0.55 #26

Job	Run time
Determine changes	7s
pre-commit	1m 20s
mkdocs	3m 48s
cargo fmt	17s
python package	2m 37s
cargo fuzz	4m 56s
cargo test (windows)	7m 44s
cargo test (wasm)	1m 48s
cargo test (linux)	4m 51s
test scripts	1m 14s
cargo clippy	2m 34s
benchmarks	6m 53s
cargo udeps	2m 9s
formatter instabilities and black similarity	4m 35s
ecosystem	10s
test ruff-lsp	17s
	45m 20s

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