Bump cob_az_index from bcd58cd to 64b24b0 (#4412)

Bumps [cob_az_index](https://github.com/tulibraries/cob_az_index) from `bcd58cd` to `64b24b0`.
- [Commits](tulibraries/cob_az_index@bcd58cd...64b24b0)

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

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

Gemfile.lock

@@ -36,7 +36,7 @@ GIT
 
 GIT
   remote: https://github.com/tulibraries/cob_az_index.git
-  revision: bcd58cda76c025e0ae728701ad946c9b8087f18b
+  revision: 64b24b01d2b61885a56526638a97d11224d800b9
   branch: main
   specs:
     cob_az_index (0.1.0)