fix(deps): update dependency com.thoughtworks.xstream:xstream to v1.4…

….21 (#51)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

build.gradle

@@ -29,7 +29,7 @@ repositories {
 
 dependencies {
     implementation 'net.portswigger.burp.extensions:montoya-api:2024.7'
-    implementation 'com.thoughtworks.xstream:xstream:1.4.20'
+    implementation 'com.thoughtworks.xstream:xstream:1.4.21'
 }
 
 sourceSets {