build(deps): bump syn from 2.0.48 to 2.0.49 (#35212) #7

Job	Run time
cargo-test-sbf (token/program)	8m 42s
cargo-test-sbf (instruction-padding/program, token/program-2022, token/program-2022-test)	13m 2s
check	0s
cargo-test-sbf (associated-token-account/program, associated-token-account/program-test)	9m 34s
test	0s
cargo-test-sbf (token-upgrade/program)	8m 31s
cargo-test-sbf (feature-proposal/program)	8m 23s
cargo-test-sbf (governance/addin-mock/program, governance/program)	12m 8s
cargo-test-sbf (memo/program)	8m 15s
cargo-test-sbf (name-service/program)	9m 21s
cargo-test-sbf (stake-pool/program)	11m 25s
cargo-test-sbf (single-pool/program)	9m 14s
	1h 38m 35s

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