Bump de.rub.nds:modifiable-variable from 4.2.2 to 5.2.0

Bumps [de.rub.nds:modifiable-variable](https://github.com/tls-attacker/ModifiableVariable) from 4.2.2 to 5.2.0.
- [Release notes](https://github.com/tls-attacker/ModifiableVariable/releases)
- [Commits](tls-attacker/ModifiableVariable@v4.2.2...v5.2.0)

---
updated-dependencies:
- dependency-name: de.rub.nds:modifiable-variable
  dependency-version: 5.2.0
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

pom.xml

@@ -16,7 +16,7 @@
         <jcommander.version>1.82</jcommander.version>
         <learnlib.version>0.18.0</learnlib.version>
         <log4j.version>2.24.3</log4j.version>
-        <modifiable-variable.version>4.2.2</modifiable-variable.version>
+        <modifiable-variable.version>5.2.0</modifiable-variable.version>
         <osgi.version>8.1.0</osgi.version>
         <protocol-attacker.version>1.1.5</protocol-attacker.version>
         <tlsattacker.core.version>6.3.4</tlsattacker.core.version>