fix(dependencies): bump potrace version (#22803)

* fix minimist vulnerability

https://www.npmjs.com/advisories/1179

* update extract-zip

Author: nikoladev

packages/gatsby-plugin-sharp/package.json

@@ -19,7 +19,7 @@
     "imagemin-webp": "^5.1.0",
     "lodash": "^4.17.15",
     "mini-svg-data-uri": "^1.1.3",
-    "potrace": "^2.1.2",
+    "potrace": "^2.1.5",
     "probe-image-size": "^4.1.1",
     "progress": "^2.0.3",
     "semver": "^5.7.1",

packages/gatsby-remark-images/package.json

@@ -14,7 +14,7 @@
     "is-relative-url": "^3.0.0",
     "lodash": "^4.17.15",
     "mdast-util-definitions": "^1.2.5",
-    "potrace": "^2.1.2",
+    "potrace": "^2.1.5",
     "query-string": "^6.11.1",
     "unist-util-select": "^1.5.0",
     "unist-util-visit-parents": "^2.1.2"

packages/gatsby-transformer-sharp/package.json

@@ -10,7 +10,7 @@
     "@babel/runtime": "^7.8.7",
     "bluebird": "^3.7.2",
     "fs-extra": "^8.1.0",
-    "potrace": "^2.1.2",
+    "potrace": "^2.1.5",
     "probe-image-size": "^4.1.1",
     "semver": "^5.7.1",
     "sharp": "^0.25.1"