Bump eslint-plugin-markdown from 1.0.2 to 2.0.0 (#6765)

* Bump eslint-plugin-markdown from 1.0.2 to 2.0.0

Bumps [eslint-plugin-markdown](https://github.com/eslint/eslint-plugin-markdown) from 1.0.2 to 2.0.0.
- [Release notes](https://github.com/eslint/eslint-plugin-markdown/releases)
- [Changelog](https://github.com/eslint/eslint-plugin-markdown/blob/main/CHANGELOG.md)
- [Commits](eslint/eslint-plugin-markdown@v1.0.2...v2.0.0)

Signed-off-by: dependabot[bot] <support@github.com>

* Update eslint config

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Pascal Birchler <pascalb@google.com>

.eslintrc

@@ -18,6 +18,7 @@
     "header",
     "jsdoc",
     "jsx-a11y",
+    "markdown",
     "react",
     "react-hooks"
   ],
@@ -412,11 +413,20 @@
         "*.md",
         "**/*.md"
       ],
-      "plugins": [
-        "markdown"
+      "processor": "markdown/markdown"
+    },
+    {
+      "files": [
+        "**/*.md/*.js"
       ],
+      "parserOptions": {
+        "ecmaFeatures": {
+          "impliedStrict": true
+        }
+      },
       "rules": {
         "@wordpress/dependency-group": "off",
+        "no-console": "off",
         "no-undef": "off",
         "no-unused-vars": "off",
         "header/header": "off",