Set versions in fastrtps.repos

Signed-off-by: JesusPoderoso <[email protected]>

Author: JesusPoderoso

fastrtps.repos

@@ -10,7 +10,7 @@ repositories:
     fastrtps:
         type: git
         url: https://github.com/eProsima/Fast-DDS.git
-        version: 2.6.x
+        version: v2.6.7
     fastddsgen:
         type: git
         url: https://github.com/eProsima/Fast-DDS-Gen.git