Bump tzinfo from 1.2.5 to 1.2.10 in /site

Bumps [tzinfo](https://github.com/tzinfo/tzinfo) from 1.2.5 to 1.2.10.
- [Release notes](https://github.com/tzinfo/tzinfo/releases)
- [Changelog](https://github.com/tzinfo/tzinfo/blob/master/CHANGES.md)
- [Commits](https://github.com/tzinfo/tzinfo/compare/v1.2.5...v1.2.10)

---
updated-dependencies:
- dependency-name: tzinfo
  dependency-type: indirect
...

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/site/Gemfile.lock b/site/Gemfile.lock
index f18eb35..54b0611 100644
--- a/site/Gemfile.lock
+++ b/site/Gemfile.lock
@@ -141,7 +141,7 @@
     thor (0.20.3)
     thread_safe (0.3.6)
     tilt (1.4.1)
-    tzinfo (1.2.5)
+    tzinfo (1.2.10)
       thread_safe (~> 0.1)
     uber (0.0.15)
     uglifier (2.7.2)