build(deps): bump de.rub.nds:x509-attacker from 4.2.1 to 4.2.3

Bumps [de.rub.nds:x509-attacker](https://github.com/tls-attacker/X509-Attacker) from 4.2.1 to 4.2.3.
- [Release notes](https://github.com/tls-attacker/X509-Attacker/releases)
- [Commits](https://github.com/tls-attacker/X509-Attacker/commits)

---
updated-dependencies:
- dependency-name: de.rub.nds:x509-attacker
  dependency-version: 4.2.3
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -147,7 +147,7 @@
         <dependency>
             <groupId>de.rub.nds</groupId>
             <artifactId>x509-attacker</artifactId>
-            <version>4.2.1</version>
+            <version>4.2.3</version>
         </dependency>
         <dependency>
             <groupId>de.rub.nds.tls.attacker</groupId>