Bump eslint-utils from 1.3.1 to 1.4.2

Bumps [eslint-utils](https://github.com/mysticatea/eslint-utils) from 1.3.1 to 1.4.2.
- [Release notes](https://github.com/mysticatea/eslint-utils/releases)
- [Commits](https://github.com/mysticatea/eslint-utils/compare/v1.3.1...v1.4.2)

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

README.md

@@ -1,6 +1,6 @@
 # Pjax
 
-[![Build Status](https://img.shields.io/travis/MoOx/pjax.svg)](https://travis-ci.org/MoOx/pjax)
+[![Build Status](https://img.shields.io/travis/MoOx/pjax.svg)](https://travis-ci.org/MoOx/pjax).
 
 > Easily enable fast AJAX navigation on any website (using pushState() + XHR)
 

package-lock.json

@@ -2404,10 +2404,13 @@
       }
     },
     "eslint-utils": {
-      "version": "1.3.1",
+      "version": "1.4.2",
-      "resolved": "https://registry.npmjs.org/eslint-utils/-/eslint-utils-1.3.1.tgz",
+      "resolved": "https://registry.npmjs.org/eslint-utils/-/eslint-utils-1.4.2.tgz",
-      "integrity": "sha512-Z7YjnIldX+2XMcjr7ZkgEsOj/bREONV60qYeB/bjMAqqqZ4zxKyWX+BOUkdmRmA9riiIPVvo5x86m5elviOk0Q==",
+      "integrity": "sha512-eAZS2sEUMlIeCjBeubdj45dmBHQwPHWyBcT1VSYB7o9x9WRRqKxyUoiXlRjyAwzN7YEzHJlYg0NmzDRWx6GP4Q==",
-      "dev": true
+      "dev": true,
+      "requires": {
+        "eslint-visitor-keys": "^1.0.0"
+      }
     },
     "eslint-visitor-keys": {
       "version": "1.0.0",
@@ -8390,9 +8393,9 @@
       }
     },
     "stringstream": {
-      "version": "0.0.6",
+      "version": "0.0.5",
-      "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.6.tgz",
+      "resolved": "https://registry.npmjs.org/stringstream/-/stringstream-0.0.5.tgz",
-      "integrity": "sha512-87GEBAkegbBcweToUrdzf3eLhWNg06FJTebl4BVJz/JgWy8CvEr9dRtX5qWphiynMSQlxxi+QqN0z5T32SLlhA==",
+      "integrity": "sha1-TkhM1N5aC7vuGORjB3EKioFiGHg=",
       "dev": true
     },
     "strip-ansi": {