feat: get a GitHub Access Token from keyring #6280

Job	Run time
path-filter	2s
integration-test / integration-test-cargo	1m 34s
integration-test / integration-test	2m 25s
integration-test / integration-test-all-envs (windows-latest)	1m 32s
integration-test / integration-test-all-envs (ubuntu-24.04)	38s
integration-test / integration-test-all-envs (macos-13)	52s
integration-test / integration-test-all-envs (macos-14)	1m 1s
renovate-config-validator	0s
update-aqua-checksums	0s
ghalint	0s
test-docker-prebuilt	0s
test / test	1m 54s
go-mod-tidy / go-mod-tidy / go-mod-tidy	25s
status-check	0s
enable-automerge	0s
	10m 23s

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