chore(deps): Bump sigs.k8s.io/release-utils from 0.7.5 to 0.7.6 #596

Job	Run time
TypeScript unit tests (actions/issue-reopener)	18s
unit tests (1.20.x, ubuntu-latest)	43s
unit tests (1.20.x, macos-latest)	53s
actionlint	4s
unit tests (1.20.x, windows-latest)	1m 22s
autogen	8s
check-dist-matrix (./actions/issue-reopener)	25s
eslint	18s
golangci-lint	34s
markdownlint	7s
yamllint	7s
issue-reopener-basic	11s
issue-reopener-dry-run	9s
issue-reopener-subdir	10s
ts-tests	2s
issue-reopener-dry-run-cleanup	2s
issue-reopener-basic-cleanup	2s
issue-reopener-subdir-cleanup	3s
check-dist	1s
	5m 39s

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