umoci: update to v0.4.7-latest
umoci: update to v0.4.7-latest

Bumping umoci to version v0.4.7-101-g4270d5b, which comprises the following commits:

    d8f4f12 build(deps): bump github.com/opencontainers/runc from 1.1.1 to 1.1.2
    2163223 *: improve io.Pipe CloseWithError usage
    aab35e4 *: implement EINTR-retry logic for io.Copy users

Signed-off-by: Bruce Ashfield <284cc737d174a260eec2a2a6324a304f84b1ae0f@gmail.com>

lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization,lgirdk/meta-virtualization