logstash 7.13.4

logstash: allowlist universal binary

```
logstash:
  * Unexpected universal binaries were found.
    The offending files are:
      /usr/local/Cellar/logstash/7.13.4/libexec/vendor/jruby/lib/jni/Darwin/libjffi-1.2.jnilib
```

Closes #82010.

Signed-off-by: Carlo Cabrera <30379873+carlocab@users.noreply.github.com>
Signed-off-by: BrewTestBot <1589480+BrewTestBot@users.noreply.github.com>

Formula/logstash.rb

@@ -1,8 +1,8 @@
 class Logstash < Formula
   desc "Tool for managing events and logs"
   homepage "https://www.elastic.co/products/logstash"
-  url "https://github.com/elastic/logstash/archive/v7.13.3.tar.gz"
-  sha256 "7294e7b4413bdc8927ac90ea28591d8e05050efe4956a39800b8c4b56f574fd2"
+  url "https://github.com/elastic/logstash/archive/v7.13.4.tar.gz"
+  sha256 "91dd76507af4cbe296103aff4babb3bbad0817e7cee91c422b5b5fecb9426e9c"
   license "Apache-2.0"
   version_scheme 1
   head "https://github.com/elastic/logstash.git"

audit_exceptions/universal_binary_allowlist.json

@@ -9,8 +9,9 @@
   "llvm@7",
   "llvm@8",
   "llvm@9",
-  "netlify-cli",
+  "logstash",
   "marp-cli",
+  "netlify-cli",
   "node-sass",
   "openjdk",
   "openjdk@11",