fix(build-colcon): check depends.rosinstall at project level

Author: ThomasDuvinage

build-colcon-project/action.yml

@@ -68,7 +68,7 @@ runs:
         set -e
         set -x
         cd ${GITHUB_WORKSPACE}/${{ inputs.workspace-dir }}
-        if [[ -f "${DEP_PATH}/depends.rosinstall" && "${ROS_DISTRO}" == "humble" ]]
+        if [[ -f "src/${{ github.repository }}/depends.rosinstall" && "${ROS_DISTRO}" == "humble" ]]
         then
           wstool init src
           wstool merge -t src src/${{ github.repository }}/depends.rosinstall -y