Bump bootsnap from 1.4.5 to 1.4.6

Bumps [bootsnap](https://github.com/Shopify/bootsnap) from 1.4.5 to 1.4.6.
- [Release notes](https://github.com/Shopify/bootsnap/releases)
- [Changelog](https://github.com/Shopify/bootsnap/blob/master/CHANGELOG.md)
- [Commits](https://github.com/Shopify/bootsnap/compare/v1.4.5...v1.4.6)

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

Gemfile.lock

@@ -81,7 +81,7 @@ GEM
     bindex (0.8.1)
     binding_of_caller (0.8.0)
       debug_inspector (>= 0.0.1)
-    bootsnap (1.4.5)
+    bootsnap (1.4.6)
       msgpack (~> 1.0)
     bootstrap-will_paginate (1.0.0)
       will_paginate
@@ -192,7 +192,7 @@ GEM
     mnemosyne-ruby (1.9.0)
       activesupport (>= 4)
       bunny
-    msgpack (1.3.1)
+    msgpack (1.3.3)
     multi_json (1.14.1)
     multi_xml (0.6.0)
     multipart-post (2.1.1)