Merge pull request #194 from rooseveltframework/renovate/html-validate-8.x

Update dependency html-validate to v8.7.3

Author: kethinov

package-lock.json

@@ -25,7 +25,7 @@
     "app-root-dir": "1.0.2",
     "es6-template-strings": "2.0.1",
     "fs-extra": "11.1.1",
-    "html-validate": "8.7.1",
+    "html-validate": "8.7.3",
     "prismjs": "1.29.0",
     "tamper": "1.1.0"
   },