ci: bump a2ml-validate-action to 6bff6ec (s-expression form support) #23

Job	Run time
governance / Trusted-base reduction policy	28s
governance / Security policy checks	33s
governance / Code quality + docs	47s
governance / Licence consistency	33s
governance / Well-Known (RFC 9116 + RSR)	35s
governance / Guix primary / Nix fallback policy	24s
governance / Workflow security linter	32s
governance / Language / package anti-pattern policy	33s
governance / Validate Hypatia baseline	40s
	5m 5s

Provide feedback