chore(deps): bump sitemap_generator from 63bf0ca to 89ec319

Bumps [sitemap_generator](https://github.com/kjvarga/sitemap_generator) from `63bf0ca` to `89ec319`.
- [Commits](kjvarga/sitemap_generator@63bf0ca...89ec319)

---
updated-dependencies:
- dependency-name: sitemap_generator
  dependency-version: 89ec319333aaafb2ed12f4a99ce3d664110cfc05
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

Gemfile.lock

@@ -1,6 +1,6 @@
 GIT
   remote: https://github.com/kjvarga/sitemap_generator.git
-  revision: 63bf0ca495220ec7d65380b9609d8c21c24470a8
+  revision: 89ec319333aaafb2ed12f4a99ce3d664110cfc05
   branch: master
   specs:
     sitemap_generator (6.3.0)