Upgrade marked to 0.7.0, fixing vuln

Regular Expression Denial of Service (ReDoS)
See https://app.snyk.io/vuln/SNYK-JS-MARKED-451341

Author: jotak

package.json

@@ -28,7 +28,7 @@
     "json-refs": "^3.0.13",
     "lit-element": "2.1.0",
     "lit-html": "1.0.0",
-    "marked": "^0.6.2",
+    "marked": "^0.7.0",
     "swagger2openapi": "^4.0.2"
   },
   "scripts": {

yarn.lock

@@ -4495,10 +4495,10 @@ map-visit@^1.0.0:
   dependencies:
     object-visit "^1.0.0"
 
-marked@^0.6.2:
-  version "0.6.2"
-  resolved "https://registry.yarnpkg.com/marked/-/marked-0.6.2.tgz#c574be8b545a8b48641456ca1dbe0e37b6dccc1a"
-  integrity sha512-LqxwVH3P/rqKX4EKGz7+c2G9r98WeM/SW34ybhgNGhUQNKtf1GmmSkJ6cDGJ/t6tiyae49qRkpyTw2B9HOrgUA==
+marked@^0.7.0:
+  version "0.7.0"
+  resolved "https://registry.yarnpkg.com/marked/-/marked-0.7.0.tgz#b64201f051d271b1edc10a04d1ae9b74bb8e5c0e"
+  integrity sha512-c+yYdCZJQrsRjTPhUx7VKkApw9bwDkNbHUKo1ovgcfDjb2kc8rLuRbIFyXL5WOEUwzSSKo3IXpph2K6DqB/KZg==
 
 math-random@^1.0.1:
   version "1.0.4"