Bump syn from 2.0.75 to 2.0.76 in /native #978

Job	Run time
lint	1m 36s
docs	1m 39s
Rustfmt	7s
Rust unit tests (ubuntu-latest)	2m 49s
Rust unit tests (macos-latest)	1m 37s
test (macos-latest, 3.9)	5m 1s
Rust unit tests (windows-latest)	3m 31s
test (macos-latest, 3.10)	4m 8s
typecheck	1m 19s
test (macos-latest, 3.11)	4m 20s
test (macos-latest, 3.12)	4m 38s
test (ubuntu-latest, 3.9)	5m 20s
test (ubuntu-latest, 3.10)	5m 31s
test (ubuntu-latest, 3.11)	6m 19s
test (ubuntu-latest, 3.12)	8m 17s
test (windows-latest, 3.9)	7m 30s
test (windows-latest, 3.10)	7m 45s
test (windows-latest, 3.11)	9m 18s
test (windows-latest, 3.12)	8m 54s
	1h 29m 39s

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