Merge pull request #1562 from gtk-rs/dependabot/cargo/syn-2.0.87 #3985

Job	Run time
build GTK binaries with gvsbuild	9s
build gtk-rs on Windows (cairo, true, --features png,pdf,svg,ps,use_glib,v1_16,freetype,script,wi...	2m 17s
build gtk-rs on Windows (gdk-pixbuf, true, --features v2_42)	3m 3s
build gtk-rs on Windows (gio, true, --features v2_80)	3m 20s
build gtk-rs on Windows (glib, true, --features v2_80)	2m 40s
build gtk-rs on Windows (glib-build-tools, false)	1m 57s
build gtk-rs on Windows (graphene, false)	2m 35s
build gtk-rs on Windows (pango, true, --features v1_52)	1m 36s
build gtk-rs on Windows (pangocairo, true)	1m 33s
build gtk-rs on Windows (examples, false, --bins --examples --all-features)	3m 3s
	22m 13s

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