Bump bootsnap from 1.20.1 to 1.21.0

Bumps [bootsnap](https://github.com/rails/bootsnap) from 1.20.1 to 1.21.0.
- [Release notes](https://github.com/rails/bootsnap/releases)
- [Changelog](https://github.com/rails/bootsnap/blob/main/CHANGELOG.md)
- [Commits](rails/bootsnap@v1.20.1...v1.21.0)

---
updated-dependencies:
- dependency-name: bootsnap
  dependency-version: 1.21.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Gemfile.lock

@@ -39,7 +39,7 @@ GEM
     base64 (0.3.0)
     benchmark (0.5.0)
     bigdecimal (3.3.1)
-    bootsnap (1.20.1)
+    bootsnap (1.21.0)
       msgpack (~> 1.2)
     brakeman (7.1.2)
       racc