[Java] Upgrade to Gradle 9.6.0.

Author: vyazelenko

CHANGELOG.adoc

@@ -5,7 +5,7 @@
 * **[Rust]** Inline generated header methods. (https://github.com/aeron-io/simple-binary-encoding/pull/1110[#1110])
 * **[Rust]** Add element descriptions to comments.
 * **[C#]** Seal `PrimitiveValue` and `PrimitiveType`, make `ThrowHelper` static. (https://github.com/aeron-io/simple-binary-encoding/pull/1109[#1109])
-* Upgrade to `Gradle` 9.5.1.
+* Upgrade to `Gradle` 9.6.0.
 * Upgrade to `JUnit` 6.1.0.
 * Upgrade to `Shadow` 9.4.2.
 * Upgrade to `jqwik` 1.10.1.

build.gradle

@@ -67,17 +67,14 @@ def getConfigProperty(final String projectPropertyName, final String envVarName)
     return value ? value : null
 }
 
-ext {
-    isReleaseVersion = !sbeVersion.endsWith('-SNAPSHOT')
-
-    sonatypeCentralPortalReleasesRepoUrl = 'https://ossrh-staging-api.central.sonatype.com/service/local/staging/deploy/maven2/'
-    sonatypeCentralPortalSnapshotsRepoUrl = 'https://central.sonatype.com/repository/maven-snapshots/'
-    sonatypeCentralPortalUsername = getConfigProperty('sonatypeCentralPortalUsername', 'SONATYPE_CENTRAL_PORTAL_USERNAME')
-    sonatypeCentralPortalPassword = getConfigProperty('sonatypeCentralPortalPassword', 'SONATYPE_CENTRAL_PORTAL_PASSWORD')
-
-    signingKey = getConfigProperty('signingKey', 'SIGNING_GPG_SECRET_KEY')         // NOTE: ASCII armored secret key
-    signingPassword = getConfigProperty('signingPassword', 'SIGNING_GPG_PASSWORD') // NOTE: Plain text
-}
+def isReleaseVersion = !sbeVersion.endsWith('-SNAPSHOT')
+def sonatypeCentralPortalReleasesRepoUrl = 'https://ossrh-staging-api.central.sonatype.com/service/local/staging/deploy/maven2/'
+def sonatypeCentralPortalSnapshotsRepoUrl = 'https://central.sonatype.com/repository/maven-snapshots/'
+def sonatypeCentralPortalUsername = getConfigProperty('sonatypeCentralPortalUsername', 'SONATYPE_CENTRAL_PORTAL_USERNAME')
+def sonatypeCentralPortalPassword = getConfigProperty('sonatypeCentralPortalPassword', 'SONATYPE_CENTRAL_PORTAL_PASSWORD')
+def signingKey = getConfigProperty('signingKey', 'SIGNING_GPG_SECRET_KEY')         // NOTE: ASCII armored secret key
+def signingPassword = getConfigProperty('signingPassword', 'SIGNING_GPG_PASSWORD') // NOTE: Plain text
+def libs = rootProject.libs
 
 def projectPom = {
     name = 'sbe'

gradle/wrapper/gradle-wrapper.properties

@@ -1,6 +1,6 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-9.5.1-all.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-9.6.0-all.zip
 networkTimeout=10000
 retries=0
 retryBackOffMs=500