Bump remark from 8.0.0 to 9.0.0

Bumps [remark](https://github.com/remarkjs/remark) from 8.0.0 to 9.0.0.
- [Release notes](https://github.com/remarkjs/remark/releases?after=remark-cli@5.0.0)
- [Commits](remarkjs/remark@8.0.0...9.0.0)

package.json

@@ -63,7 +63,7 @@
     "mocha": "^4.0.1",
     "mocha-lcov-reporter": "^1.3.0",
     "nyc": "^11.3.0",
-    "remark": "^8.0.0",
+    "remark": "^9.0.0",
     "remark-lint": "^6.0.1",
     "rollup": "^0.51.5",
     "rollup-plugin-babel": "^2.7.1",

yarn.lock

@@ -3225,7 +3225,7 @@ pad-right@^0.2.2:
   dependencies:
     repeat-string "^1.5.2"
 
-parse-entities@^1.0.2:
+parse-entities@^1.0.2, parse-entities@^1.1.0:
   version "1.1.1"
   resolved "https://registry.yarnpkg.com/parse-entities/-/parse-entities-1.1.1.tgz#8112d88471319f27abae4d64964b122fe4e1b890"
   dependencies:
@@ -3529,17 +3529,17 @@ remark-message-control@^4.0.0:
     unist-util-visit "^1.0.0"
     vfile-location "^2.0.0"
 
-remark-parse@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/remark-parse/-/remark-parse-4.0.0.tgz#99f1f049afac80382366e2e0d0bd55429dd45d8b"
+remark-parse@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/remark-parse/-/remark-parse-5.0.0.tgz#4c077f9e499044d1d5c13f80d7a98cf7b9285d95"
   dependencies:
     collapse-white-space "^1.0.2"
     is-alphabetical "^1.0.0"
     is-decimal "^1.0.0"
     is-whitespace-character "^1.0.0"
     is-word-character "^1.0.0"
     markdown-escapes "^1.0.0"
-    parse-entities "^1.0.2"
+    parse-entities "^1.1.0"
     repeat-string "^1.5.4"
     state-toggle "^1.0.0"
     trim "0.0.1"
@@ -3549,9 +3549,9 @@ remark-parse@^4.0.0:
     vfile-location "^2.0.0"
     xtend "^4.0.1"
 
-remark-stringify@^4.0.0:
-  version "4.0.0"
-  resolved "https://registry.yarnpkg.com/remark-stringify/-/remark-stringify-4.0.0.tgz#4431884c0418f112da44991b4e356cfe37facd87"
+remark-stringify@^5.0.0:
+  version "5.0.0"
+  resolved "https://registry.yarnpkg.com/remark-stringify/-/remark-stringify-5.0.0.tgz#336d3a4d4a6a3390d933eeba62e8de4bd280afba"
   dependencies:
     ccount "^1.0.0"
     is-alphanumeric "^1.0.0"
@@ -3568,12 +3568,12 @@ remark-stringify@^4.0.0:
     unherit "^1.0.4"
     xtend "^4.0.1"
 
-remark@^8.0.0:
-  version "8.0.0"
-  resolved "https://registry.yarnpkg.com/remark/-/remark-8.0.0.tgz#287b6df2fe1190e263c1d15e486d3fa835594d6d"
+remark@^9.0.0:
+  version "9.0.0"
+  resolved "https://registry.yarnpkg.com/remark/-/remark-9.0.0.tgz#c5cfa8ec535c73a67c4b0f12bfdbd3a67d8b2f60"
   dependencies:
-    remark-parse "^4.0.0"
-    remark-stringify "^4.0.0"
+    remark-parse "^5.0.0"
+    remark-stringify "^5.0.0"
     unified "^6.0.0"
 
 remove-trailing-separator@^1.0.1: