Bump cob_web_index from 386406f to 6b5d847 (#4215)

Bumps [cob_web_index](https://github.com/tulibraries/cob_web_index) from `386406f` to `6b5d847`.
- [Release notes](https://github.com/tulibraries/cob_web_index/releases)
- [Commits](tulibraries/cob_web_index@386406f...6b5d847)

---
updated-dependencies:
- dependency-name: cob_web_index
  dependency-type: direct:production
...

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

Gemfile.lock

@@ -57,7 +57,7 @@ GIT
 
 GIT
   remote: https://github.com/tulibraries/cob_web_index.git
-  revision: 386406f579d914b9adc864d1a4eeb506111776b8
+  revision: 6b5d847be16711995c4c537f421b8f0db53a9c77
   branch: main
   specs:
     cob_web_index (0.1.0)