Update disk-buffering/src/main/java/io/opentelemetry/contrib/disk/buf…

…fering/storage/files/DefaultTemporaryFileProvider.java

Co-authored-by: jack-berg <34418638+jack-berg@users.noreply.github.com>

disk-buffering/src/main/java/io/opentelemetry/contrib/disk/buffering/storage/files/DefaultTemporaryFileProvider.java

@@ -8,7 +8,7 @@
 import java.io.File;
 import java.io.IOException;
 
-public class DefaultTemporaryFileProvider implements TemporaryFileProvider {
+public final class DefaultTemporaryFileProvider implements TemporaryFileProvider {
   public static final TemporaryFileProvider INSTANCE = new DefaultTemporaryFileProvider();
 
   private DefaultTemporaryFileProvider() {}