Bump markdown-it and @girder/components

Bumps [markdown-it](https://github.com/markdown-it/markdown-it) and @girder/components. These dependencies needed to be updated together.

Updates `markdown-it` from 11.0.1 to 12.3.2
- [Release notes](https://github.com/markdown-it/markdown-it/releases)
- [Changelog](https://github.com/markdown-it/markdown-it/blob/master/CHANGELOG.md)
- [Commits](markdown-it/markdown-it@11.0.1...12.3.2)

Updates `@girder/components` from 2.2.10 to 3.2.0

---
updated-dependencies:
- dependency-name: markdown-it
  dependency-type: indirect
- dependency-name: "@girder/components"
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -13,7 +13,7 @@
     "jest-test": "vue-cli-service test:unit"
   },
   "dependencies": {
-    "@girder/components": "^2.1.0",
+    "@girder/components": "^3.2.0",
     "@types/bluebird": "^3.5.32",
     "@types/d3-array": "^3.0.1",
     "@types/d3-color": "^1.2.2",