Use shared script download_dependency.

.gitlab/ci/build.gitlab-ci.yml

@@ -44,7 +44,7 @@ build:ubuntu_cpp_g++10:
     - !reference [.download_dependency, script]
     # aidge_backend_cpu
     - DEPENDENCY_NAME="aidge_backend_cpu"
-    - !reference [.download_dependency, script
+    - !reference [.download_dependency, script]
 
     # Build current module
     - export CMAKE_PREFIX_PATH=../install_cpp