Bump bootsnap from 1.9.4 to 1.11.1 in /backend

Bumps [bootsnap](https://github.com/Shopify/bootsnap) from 1.9.4 to 1.11.1.
- [Release notes](https://github.com/Shopify/bootsnap/releases)
- [Changelog](https://github.com/Shopify/bootsnap/blob/main/CHANGELOG.md)
- [Commits](Shopify/bootsnap@v1.9.4...v1.11.1)

---
updated-dependencies:
- dependency-name: bootsnap
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

backend/Gemfile.lock

@@ -63,8 +63,8 @@ GEM
     addressable (2.8.0)
       public_suffix (>= 2.0.2, < 5.0)
     bindex (0.8.1)
-    bootsnap (1.9.4)
-      msgpack (~> 1.0)
+    bootsnap (1.11.1)
+      msgpack (~> 1.2)
     builder (3.2.4)
     byebug (11.1.3)
     capybara (3.36.0)
@@ -102,7 +102,7 @@ GEM
     mini_mime (1.1.2)
     mini_portile2 (2.6.1)
     minitest (5.15.0)
-    msgpack (1.4.2)
+    msgpack (1.4.5)
     nio4r (2.5.8)
     nokogiri (1.12.5)
       mini_portile2 (~> 2.6.1)