Update CODEOWNERS

Author: dmikusa

.github/CODEOWNERS

@@ -3,7 +3,7 @@ ca-certificates/ @paketo-buildpacks/utilities-maintainers
 dotnet-core/     @paketo-buildpacks/dotnet-core-maintainers
 git/             @paketo-buildpacks/utilities-maintainers
 go/              @paketo-buildpacks/go-maintainers
-java/            @paketo-buildpacks/java-buildpacks
+java/            @paketo-buildpacks/java-maintainers
 nginx/           @paketo-buildpacks/web-servers-maintainers
 nodejs/          @paketo-buildpacks/nodejs-maintainers
 php/             @paketo-buildpacks/php-maintainers