Update build_locally.sh

Author: mosfet80

build_locally.sh

@@ -40,6 +40,7 @@ fi
 
 # Install dependencies, unless argument says to skip
 if ! have_noinstall "$@"; then
+  rosdep update
   sudo apt-get install -y doxygen graphviz
   pip3 install --upgrade -r requirements.txt
 fi