ruby3.2-rack-protection: rebuild for new melange SCA metadata (#31121)

> [!IMPORTANT]
> `melange scan --diff` changes detected

```diff
diff ruby3.2-rack-protection-4.0.0-r2.apk ruby3.2-rack-protection.yaml
--- ruby3.2-rack-protection-4.0.0-r2.apk
+++ ruby3.2-rack-protection.yaml
@@ -8,5 +8,6 @@
 commit = 6c3e34c
 builddate = 1721404986
 license = MIT
+depend = ruby-3.2
 depend = ruby3.2-rack-2.2
 datahash = 020dd89d10b04fe9f13f156bce389c09fba907e613e12f31c61137eb32e3aff3
```

Co-authored-by: Philip Roche <phil.roche@chainguard.dev>

ruby3.2-rack-protection.yaml

@@ -2,7 +2,7 @@
 package:
  name: ruby3.2-rack-protection
  version: 4.0.0
- epoch: 2
+ epoch: 3
  description: Protect against typical web attacks, works with all Rack apps, including Rails
  copyright:
  - license: MIT