chore(deps): update node:8.16.0 docker digest to d5ad3f5

Author: renovate-bot

.circleci/config.yml

@@ -6,7 +6,7 @@ machine:
 jobs:
   build:
     docker:
-      - image: node:8.16.0@sha256:75b524a4b07a24b677c821307052000e2d19d4aaafe72505950bc567148a6aba
+      - image: node:8.16.0@sha256:d5ad3f5dfcb5682356f3422e84be2ac3d83b03b82df84e4f1292fea21927c8b2
     environment:
       - NPM_CONFIG_LOGLEVEL: warn
     working_directory: ~/repo