fix(git): open absolute-path files via osfs root "/" (fixes "public k… #733

Job	Run time
Prepare build	6s
Build Setup (clean, tools, schemas, lint, fmt)	2m 53s
Build github-actions	4m 49s
Run tests	1m 57s
Build documentation	25s
Build sc for linux/amd64	6m 13s
Build cloud-helpers	4m 37s
Build sc for darwin/arm64	6m 19s
Build sc for darwin/amd64	7m 9s
Docker build and push cloud-helpers-aws	2m 47s
Docker build and push kubectl	1m 4s
Docker build and push caddy	2m 14s
Docker build and push github-actions	7m 9s
Docker finalize (tag-release, deploy)	8m 34s
Finalize build and deploy for	4s
	56m 20s

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