build: bump com.google.code.gson:gson from 2.11.0 to 2.13.1

Bumps [com.google.code.gson:gson](https://github.com/google/gson) from 2.11.0 to 2.13.1.
- [Release notes](https://github.com/google/gson/releases)
- [Changelog](https://github.com/google/gson/blob/main/CHANGELOG.md)
- [Commits](https://github.com/google/gson/compare/gson-parent-2.11.0...gson-parent-2.13.1)

---
updated-dependencies:
- dependency-name: com.google.code.gson:gson
  dependency-version: 2.13.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

build.gradle.kts

@@ -49,7 +49,7 @@ dependencies {
     // Use the Kotlin JDK 8 standard library.
     implementation(kotlin("stdlib-jdk8"))
     // Gson
-    implementation("com.google.code.gson:gson:2.11.0")
+    implementation("com.google.code.gson:gson:2.13.1")
 
     testImplementation(kotlin("test"))
 }