Fix in .repos

Signed-off-by: Emilio Cuesta <emiliocuesta@eprosima.com>

Author: emiliocuestaf

fastdds_python.repos

@@ -14,7 +14,7 @@ repositories:
     fastdds_python:
         type: git
         url: https://github.com/eProsima/Fast-DDS-python.git
-        version: main
+        version: master
     fastddsgen:
         type: git
         url: https://github.com/eProsima/Fast-DDS-Gen.git