Update to use stream `sorted` operation instead of list sort

Signed-off-by: Martin Lowe <martin.lowe@eclipse-foundation.org>

src/main/java/org/eclipsefoundation/adopters/service/impl/DefaultAdopterService.java

@@ -25,6 +25,7 @@ import java.nio.file.WatchKey;
 import java.nio.file.WatchService;
 import java.util.ArrayList;
 import java.util.Collections;
+import java.util.Comparator;
 import java.util.List;
 import java.util.stream.Collectors;
 
@@ -43,8 +44,6 @@ import org.eclipsefoundation.adopters.service.AdopterService;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.collect.Comparators;
-
 import io.quarkus.runtime.Startup;
 
 /**
@@ -207,14 +206,9 @@ public class DefaultAdopterService implements AdopterService {
 		ap.setProjectId(p.getProjectId());
 		ap.setName(p.getName());
 		ap.setLogo(p.getLogo());
-		ap.setUrl(p.getUrl());
-		List<Adopter> projAdopters = getAdopters().stream().filter(a -> a.getProjects().contains(p.getProjectId()))
-                .collect(Collectors.toList());
-		// natural sort by name field
-		projAdopters.sort((o1, o2) -> 
-		    o1.getName().toLowerCase().compareTo(o2.getName().toLowerCase())
-		);
-		ap.setAdopters(projAdopters);
+        ap.setUrl(p.getUrl());
+        ap.setAdopters(getAdopters().stream().filter(a -> a.getProjects().contains(p.getProjectId()))
+                .sorted(Comparator.comparing(a -> a.getName().toLowerCase())).collect(Collectors.toList()));
 		return ap;
 	}