chore(deps-dev): bump @vuepress/plugin-active-header-links

Bumps [@vuepress/plugin-active-header-links](https://github.com/vuejs/vuepress/tree/HEAD/packages/@vuepress/plugin-active-header-links) from 1.9.7 to 1.9.8.
- [Release notes](https://github.com/vuejs/vuepress/releases)
- [Changelog](https://github.com/vuejs/vuepress/blob/master/CHANGELOG.md)
- [Commits](https://github.com/vuejs/vuepress/commits/v1.9.8/packages/@vuepress/plugin-active-header-links)

---
updated-dependencies:
- dependency-name: "@vuepress/plugin-active-header-links"
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

package-lock.json

@@ -6,7 +6,7 @@
   "license": "MIT",
   "devDependencies": {
     "@centerforopenscience/markdown-it-video": "^1.0.0",
-    "@vuepress/plugin-active-header-links": "^1.9.7",
+    "@vuepress/plugin-active-header-links": "^1.9.8",
     "@vuepress/plugin-back-to-top": "^1.9.8",
     "@vuepress/plugin-google-analytics": "^1.9.7",
     "@vuepress/plugin-html-redirect": "^0.1.4",