Update PathProviderTest.java

Author: pashidlos

src/test/java/io/visual_regression_tracker/sdk_java/PathProviderTest.java

@@ -9,8 +9,8 @@
 
 public class PathProviderTest {
 
-  String apiUrl = "http://localhost:4200";
-  PathProvider pathProvider;
+  private final String apiUrl = "http://localhost:4200";
+  private PathProvider pathProvider;
 
   @BeforeMethod()
   public void setUp() {