[mgmt-framework]: Update submodule to take build break fix. (sonic-ne…

…t#4302)

Brief:
The community code for has been updated, which mismatched with the existing sonic-mgmt-framework. Hence it broke the build.

Submodule-PR: #43

Details:
The SONiC mgmt Framework, pulls down the community modules in two steps.

Pull the existing; This does a transparent compile too.
Then checkout the specific commit-id for each and do the final compile.
The community code change broke in the compilation phase of step-1.
Fix: For the two affected modules, do download only.

Proper fix:
As part of the next phase of changes, the mgmt-framework is moving go-submodule mode, which will ensure the download happens for the assigned commit-ids only.
e.g. Refer go.mod in sonic-telemetry