Bump json5 and @vue/cli-service in /frontend#50

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dependabot/npm_and_yarn/frontend/json5-and-json5-and-vue/cli-service-2.2.3bpingris/fluffy-memory:dependabot/npm_and_yarn/frontend/json5-and-json5-and-vue/cli-service-2.2.3Copy head branch name to clipboard