Update dependency bootsnap to v1.18.4 (#169)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| bootsnap | `1.18.3` -> `1.18.4` |
[![age](https://developer.mend.io/api/mc/badges/age/rubygems/bootsnap/1.18.4?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/rubygems/bootsnap/1.18.4?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/rubygems/bootsnap/1.18.3/1.18.4?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/rubygems/bootsnap/1.18.3/1.18.4?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

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Gemfile.lock

@@ -64,7 +64,7 @@ GEM
       public_suffix (>= 2.0.2, < 6.0)
     awesome_print (1.9.2)
     bindex (0.8.1)
-    bootsnap (1.18.3)
+    bootsnap (1.18.4)
       msgpack (~> 1.2)
     brakeman (6.1.2)
       racc