chore: update dependency com.google.code.gson:gson to v2.12.1

Author: renovate[bot]

gradle/libs.versions.toml

@@ -17,7 +17,7 @@ testcontainers = "1.20.4"
 lombok = "1.18.36"
 
 # runtime dependencies
-gson = "2.11.0"
+gson = "2.12.1"
 jjwt = "0.12.6"
 guava = "33.4.0-jre"
 annotations = "26.0.1"