change java version to 11, change assertions

pom.xml

@@ -11,7 +11,7 @@
 
     <properties>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <java.version>17</java.version>
+        <java.version>11</java.version>
         <junit.jupiter.version>5.9.1</junit.jupiter.version>
     </properties>
     <dependencies>

src/test/java/pl/konrad/primenumbers/PrimeFactorsCalculatorTest.java

@@ -14,8 +14,7 @@ public class PrimeFactorsCalculatorTest {
     public void testPrimeFactorCalculator() {
         List<Integer> primeFactors = calc.calculatePrimeFactors(315);
         List<Integer> exceptedPrimeFactors = Arrays.asList(3, 3, 5, 7);
-        Assertions.assertEquals(primeFactors.size(), 4);
-        Assertions.assertEquals(primeFactors, exceptedPrimeFactors);
+        Assertions.assertIterableEquals(primeFactors,exceptedPrimeFactors);
     }
 
 }