tools: fix failing release-proposal linter for LTS transitions #323

Job	Run time
Build slim tarball	1m 31s
aarch64-darwin: with shared libraries	28m 34s
x86_64-linux: with shared libraries	28m 37s
x86_64-darwin: with shared libraries	59m 47s
aarch64-linux: with shared libraries	23m 1s
	2h 21m 30s

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