Bump Gradle Wrapper from 9.5.1 to 9.6.1.

Release notes of Gradle 9.6.1 can be found here:
https://docs.gradle.org/9.6.1/release-notes.html

Signed-off-by: bot-githubaction <bot-githubaction@gradle.com>

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

@@ -1,7 +1,7 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionSha256Sum=bafc141b619ad6350fd975fc903156dd5c151998cc8b058e8c1044ab5f7b031f
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.5.1-bin.zip
+distributionSha256Sum=9c0f7faeeb306cb14e4279a3e084ca6b596894089a0638e68a07c945a32c9e14
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.1-bin.zip
 networkTimeout=10000
 retries=0
 retryBackOffMs=500

.github/workflow-samples/java-toolchain/gradlew

@@ -20,7 +20,7 @@
 
 ##############################################################################
 #
-#   Gradle start up script for POSIX generated by Gradle.
+#   gradlew start up script for POSIX generated by Gradle.
 #
 #   Important for running:
 #
@@ -29,7 +29,7 @@
 #       bash, then to run this script, type that shell name before the whole
 #       command line, like:
 #
-#           ksh Gradle
+#           ksh gradlew
 #
 #       Busybox and similar reduced shells will NOT work, because this script
 #       requires all of these POSIX shell features:

.github/workflow-samples/java-toolchain/gradlew.bat

@@ -19,7 +19,7 @@
 @if "%DEBUG%"=="" @echo off
 @rem ##########################################################################
 @rem
-@rem  Gradle startup script for Windows
+@rem  gradlew startup script for Windows
 @rem
 @rem ##########################################################################
 
@@ -72,7 +72,7 @@ echo location of your Java installation. 1>&2
 
 
 
-@rem Execute Gradle
+@rem Execute gradlew
 @rem endlocal doesn't take effect until after the line is parsed and variables are expanded
 @rem which allows us to clear the local environment before executing the java command
 endlocal & "%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -jar "%APP_HOME%\gradle\wrapper\gradle-wrapper.jar" %* & call :exitWithErrorLevel

sources/src/wrapper-validation/wrapper-checksums.json

@@ -1,20 +1,4 @@
 [
-  {
-    "version": "9.6.0",
-    "checksum": "497c8c2a7e5031f6aa847f88104aa80a93532ec32ee17bdb8d1d2f67a194a9c7"
-  },
-  {
-    "version": "9.7.0-milestone-1",
-    "checksum": "8a23bf708fd4e02674e77fb34b0fa7c02f0d53c2ad377385ab507422313d26d1"
-  },
-  {
-    "version": "9.6.0-rc-3",
-    "checksum": "497c8c2a7e5031f6aa847f88104aa80a93532ec32ee17bdb8d1d2f67a194a9c7"
-  },
-  {
-    "version": "9.6.0-rc-2",
-    "checksum": "497c8c2a7e5031f6aa847f88104aa80a93532ec32ee17bdb8d1d2f67a194a9c7"
-  },
   {
     "version": "9.6.0-rc-1",
     "checksum": "497c8c2a7e5031f6aa847f88104aa80a93532ec32ee17bdb8d1d2f67a194a9c7"