CI: bump docker container version

fhunleth · fhunleth · commit 83a21e3fd4de · 2020-12-04T08:39:07.000-05:00
diff --git a/.circleci/config.yml b/.circleci/config.yml
@@ -1,7 +1,7 @@
 defaults: &defaults
   working_directory: /nerves/build
   docker:
-    - image: nervesproject/nerves_system_br:1.13.2
+    - image: nervesproject/nerves_system_br:1.13.5
   environment:
     MIX_ENV: prod
 
