fix: templates/stress-test/package.json & templates/stress-test/.snyk…

… to reduce vulnerabilities

The following vulnerabilities are fixed with a Snyk patch:
- https://snyk.io/vuln/SNYK-JS-LODASH-567746

templates/stress-test/package.json

@@ -9,7 +9,9 @@
     "build-pagination": "PAGINATION=true yarn build",
     "bundle": "react-static bundle",
     "export": "react-static export",
-    "serve": "serve dist -p 3000 -s"
+    "serve": "serve dist -p 3000 -s",
+    "snyk-protect": "snyk protect",
+    "prepublish": "npm run snyk-protect"
   },
   "dependencies": {
     "@reach/router": "^1.2.1",
@@ -23,10 +25,12 @@
     "react-static": "^6.0.18",
     "react-static-plugin-emotion": "^6.0.8",
     "react-static-plugin-styled-components": "^6.0.8",
-    "styled-components": "^4.1.1"
+    "styled-components": "^4.1.1",
+    "snyk": "^1.316.1"
   },
   "devDependencies": {
     "eslint-config-react-tools": "1.x.x",
     "serve": "^10.1.1"
-  }
+  },
+  "snyk": true
 }