fix(deps): update module github.com/google/go-github/v67 to v68 #6597

Job	Run time
path-filter	2s
integration-test / integration-test	1m 53s
integration-test / integration-test-all-envs (windows-latest)	1m 40s
integration-test / integration-test-cargo	1m 23s
integration-test / integration-test-all-envs (ubuntu-24.04)	57s
integration-test / integration-test-all-envs (macos-13)	2m 1s
integration-test / integration-test-all-envs (macos-14)	1m 3s
renovate-config-validator	0s
update-aqua-checksums	0s
test-docker-prebuilt	0s
ghalint	0s
test / test	1m 58s
go-mod-tidy / go-mod-tidy / go-mod-tidy	16s
status-check	0s
enable-automerge	0s
	11m 13s

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