chore(deps): update dependency @vuepress/plugin-slimsearch to v2.0.0-rc.68

Author: renovate[bot]

package-lock.json

@@ -35,7 +35,7 @@
     "@vuepress/plugin-prismjs": "2.0.0-rc.66",
     "@vuepress/plugin-pwa": "2.0.0-rc.66",
     "@vuepress/plugin-revealjs": "^2.0.0-rc.47",
-    "@vuepress/plugin-slimsearch": "2.0.0-rc.67",
+    "@vuepress/plugin-slimsearch": "2.0.0-rc.68",
     "@vuepress/plugin-umami-analytics": "2.0.0-rc.66",
     "@vueup/vue-quill": "^1.2.0",
     "ansi-to-html": "^0.7.2",