chore(deps): update circleci/node:8 docker digest to 7fb100b

Author: renovate-bot

.circleci/config.yml

@@ -6,7 +6,7 @@ machine:
 jobs:
   build:
     docker:
-      - image: circleci/node:8@sha256:778d50742fca27b96493c7fbca438d4dade232ad39e0d53edc8041075c003a6c
+      - image: circleci/node:8@sha256:7fb100b27c946044786435a1967ef7bdd3006e4b99ab6997faf8c53f267a2f7a
       - image: circleci/mysql:8.0.3@sha256:ea4c062323a944b9152137a62f5b2c8b3d5e235d98af66675871506a1bf6cc6e
     environment:
       - NPM_CONFIG_LOGLEVEL: warn