fix: change branch for Autoware Core in build_depends.repos

Signed-off-by: Ryohsuke Mitsudome <ryohsuke.mitsudome@tier4.jp>

Author: mitsudome-r

build_depends.repos

@@ -6,7 +6,7 @@ repositories:
   core/autoware.core:
     type: git
     url: https://github.com/autowarefoundation/autoware.core.git
-    version: 0.1.0
+    version: main
   msgs/autoware_msgs:
     type: git
     url: https://github.com/autowarefoundation/autoware_msgs.git