fix: assertj contains is weaker than hamcrests, containsExactly matches hamcrests contains (#371)

Author: davidburkhart

src/main/resources/META-INF/rewrite/hamcrest.yml

@@ -140,7 +140,7 @@ recipeList:
   # List Matchers
   - org.openrewrite.java.testing.hamcrest.HamcrestMatcherToAssertJ:
       matcher: contains
-      assertion: contains
+      assertion: containsExactly
   - org.openrewrite.java.testing.hamcrest.HamcrestMatcherToAssertJ:
       matcher: containsInAnyOrder
       assertion: containsExactlyInAnyOrder

src/test/java/org/openrewrite/java/testing/hamcrest/MigrateHamcrestToAssertJTest.java

@@ -229,7 +229,7 @@ void test() {
 
     private static Stream<Arguments> listReplacements() {
         return Stream.of(
-          Arguments.arguments("list1", "contains", "item", "contains"),
+          Arguments.arguments("list1", "contains", "item", "containsExactly"),
           Arguments.arguments("list1", "containsInAnyOrder", "item", "containsExactlyInAnyOrder"),
           Arguments.arguments("list1", "containsInRelativeOrder", "item", "containsExactly"),
           Arguments.arguments("list1", "empty", "", "isEmpty"),