Remove version constraint for Eigen3 package for Eigen3 5.0.0 compat (#202)

Author: traversaro

cmake/WalkingControllersDependencies.cmake

@@ -6,7 +6,7 @@ find_package(YARP 3.6.0 REQUIRED)
 find_package(ICUB REQUIRED)
 find_package(ICUBcontrib REQUIRED)
 find_package(iDynTree 10.0.0 REQUIRED)
-find_package(Eigen3 3.2.92 REQUIRED)
+find_package(Eigen3 REQUIRED)
 find_package(UnicyclePlanner 0.8.0 REQUIRED)
 find_package(OsqpEigen 0.4.0 REQUIRED)
 find_package(BipedalLocomotionFramework 0.18.0