chore: update scripts/update-gradle.sh to v8.13.0

Author: web-flow

CHANGELOG.md

@@ -39,6 +39,12 @@
   - The new module will be exposed as an `api` dependency when using `sentry-spring-boot-jakarta` (Spring Boot 3) or `sentry-spring-jakarta` (Spring 6). 
     Therefore, if you're using one of those modules, changing your imports will suffice.
 
+### Dependencies
+
+- Bump Gradle from v8.12.1 to v8.13.0 ([#4209](https://github.com/getsentry/sentry-java/pull/4209))
+  - [changelog](https://github.com/gradle/gradle/blob/master release-test/CHANGELOG.md#v8130)
+  - [diff](https://github.com/gradle/gradle/compare/v8.12.1...v8.13.0)
+
 ## 8.2.0
 
 ### Breaking Changes

gradle/wrapper/gradle-wrapper.jar

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.12.1-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.13-bin.zip
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME