Replace deprecated archivePath

Fix deprecation warning

```
The AbstractArchiveTask.archivePath property has been deprecated. This is
scheduled to be removed in Gradle 9.0. Please use the archiveFile property
instead. For more information, please refer to
https://docs.gradle.org/8.8/dsl/org.gradle.api.tasks.bundling.AbstractArchiveTask.html#org.gradle.api.tasks.bundling.AbstractArchiveTask:archivePath
in the Gradle documentation.
```

`.archivePath` has been deprecated and will be removed in Gradle 9.0.
Use `.archiveFile.get().asFile` instead.

Signed-off-by: Jürgen Walter <juergen.walter@sap.com>

e2e-test/build.gradle

@@ -52,7 +52,7 @@ subprojects {
     tasks.register('copyDataPrepperArchive', Copy) {
         dependsOn ':release:archives:linux:linuxx64DistTar'
         duplicatesStrategy = DuplicatesStrategy.EXCLUDE
-        from project(':release:archives:linux').tasks.getByName('linuxx64DistTar').archivePath
+        from project(':release:archives:linux').tasks.getByName('linuxx64DistTar').archiveFile.get().asFile
         into("${project.buildDir}/docker/")
     }
 

release/archives/build.gradle

@@ -147,7 +147,7 @@ CopySpec archiveToTar() {
     return copySpec {
         duplicatesStrategy = DuplicatesStrategy.EXCLUDE
         into('lib') {
-            from project(':data-prepper-main').jar.archivePath
+            from project(':data-prepper-main').jar.archiveFile.get().asFile
             from configurations.runtimeClasspath
             //from allDependencyJarsFromMain(project(path: ':data-prepper-main', configuration: 'allDependencyJars')).runtimeClasspath
             //from project(':data-prepper-main').configurations.allDependencyJars

release/docker/build.gradle

@@ -10,7 +10,7 @@ plugins {
 docker {
     name "${project.rootProject.name}:${project.version}"
     tag "${project.rootProject.name}", "${project.version}"
-    files project(':release:archives:linux').tasks.getByName('linuxx64DistTar').archivePath
+    files project(':release:archives:linux').tasks.getByName('linuxx64DistTar').archiveFile.get().asFile
     files "${project.projectDir}/config/default-data-prepper-config.yaml", "${project.projectDir}/config/default-keystore.p12"
     files 'adoptium.repo'
     buildArgs(['ARCHIVE_FILE' : project(':release:archives:linux').tasks.getByName('linuxx64DistTar').archiveFileName.get(),