Build(deps-dev): bump is-png from 1.1.0 to 2.0.0 (#3342)

Bumps [is-png](https://github.com/sindresorhus/is-png) from 1.1.0 to 2.0.0.
- [Release notes](https://github.com/sindresorhus/is-png/releases)
- [Commits](https://github.com/sindresorhus/is-png/compare/v1.1.0...v2.0.0)

Signed-off-by: dependabot[bot] <support@dependabot.com>

package-lock.json

@@ -13025,9 +13025,9 @@
       }
     },
     "is-png": {
-      "version": "1.1.0",
-      "resolved": "https://registry.npmjs.org/is-png/-/is-png-1.1.0.tgz",
-      "integrity": "sha1-1XSxK/J1wDUEVVcLDltXqwYgd84=",
+      "version": "2.0.0",
+      "resolved": "https://registry.npmjs.org/is-png/-/is-png-2.0.0.tgz",
+      "integrity": "sha512-4KPGizaVGj2LK7xwJIz8o5B2ubu1D/vcQsgOGFEDlpcvgZHto4gBnyd0ig7Ws+67ixmwKoNmu0hYnpo6AaKb5g==",
       "dev": true
     },
     "is-promise": {

package.json

@@ -178,7 +178,7 @@
     "husky": "^1.3.1",
     "icedfrisby": "2.0.0-alpha.5",
     "icedfrisby-nock": "^1.1.0",
-    "is-png": "^1.1.0",
+    "is-png": "^2.0.0",
     "is-svg": "^4.1.0",
     "js-yaml-loader": "^1.0.1",
     "lint-staged": "^8.1.5",