tools: fix failing release-proposal linter for LTS transitions #330

Job	Run time
Build slim tarball	1m 34s
x86_64-darwin: with shared libraries	56m 57s
x86_64-linux: with shared libraries	31m 21s
aarch64-linux: with shared libraries	25m 51s
aarch64-darwin: with shared libraries	30m 11s
	2h 25m 54s

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