Bump markdown-pdf version because of security vulnerability

Author: kriskbx

package-lock.json

@@ -34,7 +34,7 @@
     "find-in-files": "^0.4.0",
     "hash-sum": "^1.0.2",
     "hashids": "^1.1.1",
-    "markdown-pdf": "^8.0.0",
+    "markdown-pdf": "^9.0.0",
     "markdown-table": "^1.1.0",
     "moment": "^2.22.2",
     "moment-timezone": "^0.5.21",

package.json

@@ -885,9 +885,9 @@ [email protected]:
   dependencies:
     tmpl "1.0.x"
 
-markdown-pdf@^8.0.0:
-  version "8.1.1"
-  resolved "https://registry.yarnpkg.com/markdown-pdf/-/markdown-pdf-8.1.1.tgz#25c025d4f4f91869ac0f3f6fd7f7d32237669438"
+markdown-pdf@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/markdown-pdf/-/markdown-pdf-9.0.0.tgz#d699f29c3b6c41da4b9a2ec7d09ea8895daef146"
   dependencies:
     commander "^2.2.0"
     duplexer "^0.1.1"