fix(deps): upgrade Spotless and Eclipse JDT for Java 25 support

Bump spotless-plugin-gradle from 6.22.0 to 7.0.4 and pin Eclipse JDT
to 4.34 so the formatter can handle Java 21+ syntax (e.g. pattern-matching
switch expressions).

Author: Skraye

spotless-conventions/build.gradle

@@ -53,7 +53,7 @@ repositories {
 }
 
 dependencies {
-    implementation 'com.diffplug.spotless:spotless-plugin-gradle:6.22.0'
+    implementation 'com.diffplug.spotless:spotless-plugin-gradle:7.0.4'
 
     testImplementation gradleTestKit()
     testImplementation 'org.junit.jupiter:junit-jupiter:5.9.3'

spotless-conventions/src/main/groovy/io/kestra/gradle/KestraSpotlessConventionsPlugin.groovy

@@ -98,7 +98,7 @@ class KestraSpotlessConventionsPlugin implements Plugin<Project> {
 
                 File spotlessDir = project.layout.buildDirectory.dir('spotless-config').get().asFile
                 javaSpec.importOrderFile(new File(spotlessDir, 'eclipse-kestra.importorder'))
-                javaSpec.eclipse().configFile(new File(spotlessDir, 'eclipse-java-kestra-style.xml'))
+                javaSpec.eclipse('4.34').configFile(new File(spotlessDir, 'eclipse-java-kestra-style.xml'))
 
                 javaSpec.toggleOffOn()
                 javaSpec.removeUnusedImports()