Java/Spring: Update to Gradle 8.14, and validate on Java 25

Author: amotl

.github/workflows/test-java-spring.yml

@@ -40,6 +40,7 @@ jobs:
         java-version: [
           '17',
           '21',
+          '25',
         ]
         cratedb-version: [ 'nightly' ]
 

java-spring/gradle/wrapper/gradle-wrapper.properties

@@ -1,5 +1,5 @@
 distributionBase=GRADLE_USER_HOME
 distributionPath=wrapper/dists
-distributionUrl=https\://services.gradle.org/distributions/gradle-8.3-bin.zip
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.14-bin.zip
 zipStoreBase=GRADLE_USER_HOME
 zipStorePath=wrapper/dists