Add contents:write permission to release job #155

Job	Run time
Test	49s
Format	8s
Clippy	46s
Security	2m 56s
Build (x86_64-pc-windows-msvc)	2m 54s
Build (aarch64-unknown-linux-gnu)	1m 40s
Build (x86_64-apple-darwin)	1m 22s
Build (x86_64-unknown-linux-gnu)	1m 25s
Release	-1s
	11m 59s

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