fix(deps): update rust crate syn to v2.0.48 #39

Job	Run time
build-freebsd	32m 16s
build-linux-master	0s
build-all-features (x86_64-unknown-linux-gnu)	5m 35s
build-linux-pr (dev, x86_64-unknown-linux-gnu)	13m 2s
build-linux-pr (dev, armv7-unknown-linux-gnueabihf)	3m 33s
build-linux-stable	0s
build-linux-pr (dev, aarch64-linux-android)	3m 1s
build-macos (x86_64-apple-darwin, dev)	18m 48s
build-windows-master	0s
build-linux-pr (release, x86_64-unknown-linux-gnu)	8m 0s
build-macos (x86_64-apple-darwin, release)	6m 36s
build-linux-pr (release, armv7-unknown-linux-gnueabihf)	4m 23s
build-macos (aarch64-apple-darwin, dev)	4m 57s
build-linux-pr (release, aarch64-linux-android)	4m 20s
build-windows-pr (x86_64-pc-windows-msvc, dev)	13m 29s
build-macos (aarch64-apple-darwin, release)	8m 1s
build-windows-pr (x86_64-pc-windows-msvc, release)	6m 9s
build-windows-stable	0s
check	1m 22s
doc	4s
conclusion	1s
	2h 13m 37s

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