In-range update of npm dependencies

Author: RandomByte

npm-shrinkwrap.json

@@ -117,13 +117,13 @@
 	},
 	"devDependencies": {
 		"ava": "^2.4.0",
-		"coveralls": "^3.0.6",
+		"coveralls": "^3.0.7",
 		"cross-env": "^6.0.3",
 		"docdash": "^1.1.1",
 		"eslint": "^5.16.0",
 		"eslint-config-google": "^0.14.0",
 		"eslint-plugin-jsdoc": "^4.8.4",
-		"execa": "^2.0.5",
+		"execa": "^2.1.0",
 		"jsdoc": "^3.6.3",
 		"mock-require": "^3.0.3",
 		"nyc": "^14.1.1",