refactor: upgrade prismjs from 1.25.0 to 1.26.0 (#2019)

Author: snyk-bot

package-lock.json

@@ -56,7 +56,7 @@
     "parse": "3.4.1",
     "passport": "0.5.2",
     "passport-local": "1.0.0",
-    "prismjs": "1.25.0",
+    "prismjs": "1.26.0",
     "prop-types": "15.8.1",
     "qrcode": "1.5.0",
     "react": "16.14.0",