Update git submodules

* Update docs/submodules/so.git from branch 'master'
  to 72ee130503a9ff4ddb92a5797d091a1b69bd004a
  - Merge "Update to Latest ETSI Catalog Swagger"
  - Update to Latest ETSI Catalog Swagger
    
    Change-Id: I51687625cbc7ac52d882fb58fc76a1875528d693
    Issue-ID: SO-2578
    Signed-off-by: rope252 <gareth.roper@est.tech>
    
1 file changed