fix: update dependency chokidar to v2.1.6 (#16832)

Author: renovate[bot]

packages/gatsby-page-utils/package.json

@@ -22,7 +22,7 @@
   "dependencies": {
     "@babel/runtime": "^7.0.0",
     "bluebird": "^3.5.0",
-    "chokidar": "2.1.2",
+    "chokidar": "2.1.6",
     "fs-exists-cached": "^1.0.0",
     "glob": "^7.1.1",
     "lodash": "^4.17.14",

packages/gatsby-source-filesystem/package.json

@@ -10,7 +10,7 @@
     "@babel/runtime": "^7.0.0",
     "better-queue": "^3.8.7",
     "bluebird": "^3.5.0",
-    "chokidar": "2.1.2",
+    "chokidar": "2.1.6",
     "file-type": "^10.2.0",
     "fs-extra": "^5.0.0",
     "gatsby-core-utils": "^1.0.5",

packages/gatsby/package.json

@@ -38,7 +38,7 @@
     "cache-manager": "^2.9.0",
     "cache-manager-fs-hash": "^0.0.6",
     "chalk": "^2.3.2",
-    "chokidar": "2.1.2",
+    "chokidar": "2.1.6",
     "common-tags": "^1.4.0",
     "compression": "^1.7.3",
     "convert-hrtime": "^2.0.0",