Update git submodules

* Update docs/submodules/policy/apex-pdp.git from branch 'master'
  to 20b67a6e8cd07b7e49a7725288d95fb66dcebae0
  - Fix Kafka partiion support in APEX
    
    The kafka producer property ‘partitioner.class’ should be configurable via
    the EngineConfig.json file so that a specialized or custom Kafka partitioner
    can be used.
    
    Issue-ID: POLICY-1627
    Change-Id: Ic36ccdf3d244ab932b58c3e2ae1cd668249726c5
    Signed-off-by: liamfallon <liam.fallon@est.tech>
    
1 file changed