Bump bootsnap from 1.4.8 to 1.4.9 (#15086)

Bumps [bootsnap](https://github.com/Shopify/bootsnap) from 1.4.8 to 1.4.9.
- [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/v1.4.8...v1.4.9)

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

Gemfile.lock

@@ -104,7 +104,7 @@ GEM
       debug_inspector (>= 0.0.1)
     blurhash (0.1.4)
       ffi (~> 1.10.0)
-    bootsnap (1.4.8)
+    bootsnap (1.4.9)
       msgpack (~> 1.0)
     brakeman (4.10.0)
     browser (4.2.0)