refactor: configure Gemini reviewer to ignore lockfile and changelog #3510

Job	Run time
list	26s
workflow (build-unit-tests)	2m 4s
workflow (devkit-core-tests-rerun)	1m 38s
workflow (modules-builder-tests)	1m 48s
workflow (build-cli)	1m 33s
workflow (devkit-core-tests)	1m 24s
	8m 53s

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