Update git submodules

* Update platform/frameworks/libs/net from branch 'master'
  to dcd92255cbb705f1168b1d3791d5c132fe3d54ff
  - Merge "Add framework-connectivity-t to net-utils"
  - Add framework-connectivity-t to net-utils
    
    The dependency is necessary as it builds against module_current and uses
    APIs moved there.
    
    Ignore-AOSP-First: Avoiding conflicts, cherry-pick will follow
    Bug: 197717846
    Test: m
      (cherry-picked from ag/16770415)
    Change-Id: I150adbdcc6ba48e0fade9f43242ef5d2f8d7cea0
    Merged-In: I150adbdcc6ba48e0fade9f43242ef5d2f8d7cea0