Require CMake 3.19 for YARP master

Author: PeterBowman

.github/workflows/ci.yml

@@ -40,7 +40,7 @@ jobs:
         robotology:
         - { yarp: yarp-3.8, cmake: 3.16.x }
         - { yarp: yarp-3.9, cmake: 3.16.x }
-        - { yarp: master, cmake: 3.16.x }
+        - { yarp: master, cmake: 3.19.x }
         compiler:
         - { cc: gcc, cxx: g++ }
         - { cc: clang, cxx: clang++ }