Update dependency brakeman to v6.2.1 (#171)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [brakeman](https://brakemanscanner.org/)
([source](https://togithub.com/presidentbeef/brakeman),
[changelog](https://togithub.com/presidentbeef/brakeman/releases)) |
`6.1.2` -> `6.2.1` |
[![age](https://developer.mend.io/api/mc/badges/age/rubygems/brakeman/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/rubygems/brakeman/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/rubygems/brakeman/6.1.2/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/rubygems/brakeman/6.1.2/6.2.1?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>presidentbeef/brakeman (brakeman)</summary>

###
[`v6.2.1`](https://togithub.com/presidentbeef/brakeman/blob/HEAD/CHANGES.md#621---2024-08-22)

Just a packaging fix for brakeman.gem

###
[`v6.2.0`](https://togithub.com/presidentbeef/brakeman/blob/HEAD/CHANGES.md#620---2024-08-22)

-   Add `--show-ignored` option (Gabriel Zayas)
-   Add optional support for Prism parser
-   Warn about unscoped finds with `find_by!`
-   Treat `::X` and `X` the same, for now (Jill Klang)
- Fix compatibility with default frozen string literals (Jean Boussier)
-   Remediation advice for command injection (Nicholas Barone)
-   Fix Ruby warnings in test suite (Jean Boussier)
-   Support YAML aliases in secret configs (Chedli Bourguiba)
-   Add initial Rails 8 support (Ron Shinall)
-   Handle mass assignment with splats
-   Add support for symbolic links (Lu Zhu)

</details>

---

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---

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---

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Gemfile.lock

@@ -66,7 +66,7 @@ GEM
     bindex (0.8.1)
     bootsnap (1.18.4)
       msgpack (~> 1.2)
-    brakeman (6.1.2)
+    brakeman (6.2.1)
       racc
     builder (3.3.0)
     byebug (11.1.3)