build(deps): bump github.com/opencontainers/image-spec from 1.1.0-rc5 to 1.1.0-rc.6 #165

Job	Run time
Generate Code	1m 12s
Go Lint	1m 26s
Rego PR checks	46s
WASM	8s
Check Generated	29s
Go Test (linux)	3m 55s
Go Build (linux amd64)	1m 54s
Go compat build/test (ubuntu-22.04, 1.19)	43s
Go Test (darwin)	4m 14s
Go Race Detector	5m 1s
Go Build (linux arm64)	2m 15s
Go compat build/test (macos-latest, 1.19)	1m 24s
Go Build (windows)	2m 37s
Go Build (darwin)	1m 9s
smoke-test-binaries	0s
docker image smoke test	0s
	27m 13s

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