[Dev Deps] pin jsonc-parser due to a breaking change

See microsoft/node-jsonc-parser#85

Author: ljharb

package.json

@@ -86,6 +86,7 @@
     "glob": "^7.2.3",
     "in-publish": "^2.0.1",
     "jackspeak": "=2.1.1",
+    "jsonc-parser": "=3.2.0",
     "linklocal": "^2.8.2",
     "lodash.isarray": "^4.0.0",
     "markdownlint-cli": "~0.35",