chore: bump gradle-wrapper from 9.1.0 to 9.6.0 (#390)

Bump Gradle wrapper 9.1.0 → 9.6.0. All CI green, no code changes needed.

gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.1.0-bin.zip
-distributionSha256Sum=a17ddd85a26b6a7f5ddb71ff8b05fc5104c0202c6e64782429790c933686c806
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.0-bin.zip
+distributionSha256Sum=bbaeb2fef8710818cf0e261201dab964c572f92b942812df0c3620d62a529a01
 networkTimeout=10000
 validateDistributionUrl=true
 zipStoreBase=GRADLE_USER_HOME