feat(test): Update golangci-lint to 1.27.0

Since we've moved to Go 1.14, golangci-lint has been silently failing.
This commit updates to a compatible version.

Signed-off-by: Marc Khouzam <marc.khouzam@montreal.ca>

.circleci/config.yml

@@ -9,7 +9,7 @@ jobs:
 
     environment:
       GOCACHE: "/tmp/go/cache"
-      GOLANGCI_LINT_VERSION: "1.21.0"
+      GOLANGCI_LINT_VERSION: "1.27.0"
 
     steps:
       - checkout