message: Minor package-lock.json update.
diff: {
  "name": "polyserve",
  - "version": "0.21.2",
  + "version": "0.21.3",
  "lockfileVersion": 1,
  "requires": true,
  "dependencies": {
  }
  }
  },
  - "string_decoder": {
  - "version": "1.0.1",
  - "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.1.tgz",
  - "integrity": "sha1-YuIA8DmVWmgQ2N8KM//A8BNmLZg=",
  - "dev": true,
  - "requires": {
  - "safe-buffer": "5.0.1"
  - }
  - },
  "string-width": {
  "version": "1.0.2",
  "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
  "strip-ansi": "3.0.1"
  }
  },
  + "string_decoder": {
  + "version": "1.0.1",
  + "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.1.tgz",
  + "integrity": "sha1-YuIA8DmVWmgQ2N8KM//A8BNmLZg=",
  + "dev": true,
  + "requires": {
  + "safe-buffer": "5.0.1"
  + }
  + },
  "stringstream": {
  "version": "0.0.5",
  "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
  "resolved": "https://registry.npmjs.org/stream-shift/-/stream-shift-1.0.0.tgz",
  "integrity": "sha1-1cdSgl5TZ+eG944Y5EXqIjoVWVI="
  },
  - "string_decoder": {
  - "version": "1.0.3",
  - "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
  - "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
  - "requires": {
  - "safe-buffer": "5.1.1"
  - }
  - },
  "string-width": {
  "version": "1.0.2",
  "resolved": "https://registry.npmjs.org/string-width/-/string-width-1.0.2.tgz",
  "strip-ansi": "3.0.1"
  }
  },
  + "string_decoder": {
  + "version": "1.0.3",
  + "resolved": "https://registry.npmjs.org/string_decoder/-/string_decoder-1.0.3.tgz",
  + "integrity": "sha512-4AH6Z5fzNNBcH+6XDMfA/BTt87skxqJlO0lAh3Dker5zThcAxG6mKz+iGu308UKoPPQ8Dcqx/4JhujzltRa+hQ==",
  + "requires": {
  + "safe-buffer": "5.1.1"
  + }
  + },
  "strip-ansi": {
  "version": "3.0.1",
  "resolved": "https://registry.npmjs.org/strip-ansi/-/strip-ansi-3.0.1.tgz",
  