chore(deps): bump gix from 0.83.0 to 0.84.0 in /robot-repo-automaton #205

Job	Run time
governance / Security policy checks	4s
governance / Trusted-base reduction policy	7s
governance / Code quality + docs	13s
governance / Guix primary / Nix fallback policy	6s
governance / Licence consistency	8s
governance / Language / package anti-pattern policy	13s
governance / Well-Known (RFC 9116 + RSR)	5s
governance / Validate Hypatia baseline	5s
governance / Workflow security linter	6s
	1m 7s

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