Merge pull request #24 from NoteGio/config-patch-golang-builds

Update golang build binary for 1.15.13

Author: samuelmattjohnston

.circleci/config.yml

@@ -5,7 +5,7 @@ version: 2.1
 jobs:
   test:
     docker:
-      - image: cimg/go:1.15.4
+      - image: cimg/go:1.15.13
     steps:
       - checkout
       - run:
@@ -16,7 +16,7 @@ jobs:
           command: go test ./replica
   build_push:
     docker: # run the steps with Docker
-      - image: cimg/go:1.13 # ...with this image as the primary container
+      - image: cimg/go:1.15.13 # ...with this image as the primary container
       # this is where all `steps` will run
     steps:
       - checkout