fix "shadow acne"

src/main/java/eu/jonahbauer/raytracing/render/Camera.java

@@ -130,7 +130,7 @@ public final class Camera {
     private @NotNull Color getColor(@NotNull Scene scene, @NotNull Ray ray, int depth) {
         if (depth <= 0) return Color.BLACK;
 
-        var optional = scene.hit(ray, Range.NON_NEGATIVE);
+        var optional = scene.hit(ray, new Range(0.001, Double.POSITIVE_INFINITY));
         if (optional.isPresent()) {
             var result = optional.get();