Dispatch Queue VCC Update

[xiazhvera]

Issue #, if available:

Description of changes:

• Fix for dispatch queue update Grand Dispatch Queue, Apple Network Connection, Apple SecItem #661.

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 79.56%. Comparing base (ca0228a) to head (075aa74).

Additional details and impacted files

@@                  Coverage Diff                  @@
##           grand_dispatch_queue     #714   +/-   ##
=====================================================
  Coverage                 79.56%   79.56%           
=====================================================
  Files                        30       30           
  Lines                      6142     6142           
=====================================================
  Hits                       4887     4887           
  Misses                     1255     1255           

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