Update git submodules

Update git submodules

* Update docs/submodules/sdc.git from branch 'master'
  to 22360c78d550a25b9bdaea12cdb208371b69a488
  - Allow relative path for SOL004 descriptors import

    Allow the use of relative path on SOL004 descriptors imports. Resolves
    imports with "/", "../" or "./" entries during validation and package
    processing.
    Validate if the reference is inside the package.
    Fix problem where imported descriptor files, described as a non string
    scalar yaml entry, were not being checked by the validator.

    Change-Id: Ie5a32736b6090b4adf178e8714f7460bcd068def
    Issue-ID: SDC-2422
    Signed-off-by: andre.schmid <andre.schmid@est.tech>