Upgrade: Bump @types/mermaid from 8.2.7 to 8.2.9

Bumps [@types/mermaid](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/HEAD/types/mermaid) from 8.2.7 to 8.2.9.
- [Release notes](https://github.com/DefinitelyTyped/DefinitelyTyped/releases)
- [Commits](https://github.com/DefinitelyTyped/DefinitelyTyped/commits/HEAD/types/mermaid)

---
updated-dependencies:
- dependency-name: "@types/mermaid"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

package.json

@@ -6,16 +6,16 @@
   "author": "Arthur Morgan, Project X Community",
   "license": "CC-BY-SA-4.0",
   "devDependencies": {
-    "@types/bootstrap": "^5.1.4",
-    "@types/jquery": "^3.5.6",
-    "@types/mermaid": "^8.2.7",
+    "@types/bootstrap": "^5.1.10",
+    "@types/jquery": "^3.5.14",
+    "@types/mermaid": "^8.2.9",
     "@types/node": "^16.9.1",
     "@vuepress/bundler-vite": "^2.0.0-beta.25",
     "@vuepress/plugin-back-to-top": "^2.0.0-beta.25",
     "@vuepress/plugin-debug": "^2.0.0-beta.25",
     "@vuepress/plugin-search": "^2.0.0-beta.25",
     "postcss-loader": "^6.1.1",
-    "prettier": "^2.4.0",
+    "prettier": "^2.6.2",
     "sass": "^1.39.2",
     "sass-loader": "^12.1.0",
     "vue-property-decorator": "^9.1.2",
@@ -27,12 +27,12 @@
     "lint": "prettier --write ."
   },
   "dependencies": {
-    "@popperjs/core": "^2.10.1",
+    "@popperjs/core": "^2.11.5",
     "bootstrap": "^5.1.1",
     "esbuild": "^0.14.38",
     "jquery": "^3.6.0",
     "markdown-it-footnote": "^3.0.3",
-    "mermaid": "^8.12.1",
+    "mermaid": "^9.0.1",
     "vuepress-plugin-mermaidjs": "^1.8.1"
   }
 }