Bump Gradle Wrapper from 9.8.2 to 9.9.0 in /.github/workflow-samples/java-toolchain (#1118)

Bump Gradle Wrapper from 9.8.2 to 9.9.0.

Release notes of Gradle 9.9.0 can be found here:
https://docs.gradle.org/9.9.0/release-notes.html

.github/workflow-samples/java-toolchain/gradle/wrapper/gradle-wrapper.properties

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=21bd5da2de49b642904077f38c0efdc7778e92b3ed0889392dca61b97e389607
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.8.2-bin.zip
+distributionSha256Sum=0b00b0ffe07c4d4789c12d4935a44a7057d55774b7540bd4a3f76f336deb177a
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.9.0-bin.zip
 networkTimeout=10000
 retries=0
 retryBackOffMs=500