Bugfix: Java 25 broke test

As test was naively using `new File("")` assuming its
method `file.list()` will return `null` on cleanup
in `teardown()` method.

But, it turns out it was an old Java bug fixed in
Java 25, and once GH matrix got Java 25 introduced,
it broke the build.

Refs:
* https://bugs.openjdk.org/browse/JDK-8024695
* https://inside.java/2025/11/03/quality-heads-up/

Thanks to @sormuras

Author: cstamas

maven-resolver-impl/src/test/java/org/eclipse/aether/internal/impl/DefaultArtifactResolverTest.java

@@ -761,7 +761,7 @@ public void testFindInLocalRepositoryWhenVersionWasFoundInLocalRepository() thro
         session.setLocalRepositoryManager(new LocalRepositoryManager() {
 
             public LocalRepository getRepository() {
-                return new LocalRepository(new File(""));
+                return new LocalRepository(lrm.getRepository().getBasedir());
             }
 
             public String getPathForRemoteMetadata(Metadata metadata, RemoteRepository repository, String context) {
@@ -828,7 +828,7 @@ public void testFindInLocalRepositoryWhenVersionRangeWasResolvedFromLocalReposit
         session.setLocalRepositoryManager(new LocalRepositoryManager() {
 
             public LocalRepository getRepository() {
-                return new LocalRepository(new File(""));
+                return new LocalRepository(lrm.getRepository().getBasedir());
             }
 
             public String getPathForRemoteMetadata(Metadata metadata, RemoteRepository repository, String context) {