升级 MyBatis Generator 依赖版本，更新一些文件，同时修了一个小Bug

bookshelfplus/src/main/java/plus/bookshelf/Dao/DO/BookDOExample.java

@@ -35,7 +35,7 @@ public class BookDOExample {
      * @mbg.generated
      */
     public BookDOExample() {
-        oredCriteria = new ArrayList<Criteria>();
+        oredCriteria = new ArrayList<>();
     }
 
     /**
@@ -158,7 +158,7 @@ public class BookDOExample {
 
         protected GeneratedCriteria() {
             super();
-            criteria = new ArrayList<Criterion>();
+            criteria = new ArrayList<>();
         }
 
         public boolean isValid() {
@@ -802,7 +802,6 @@ public class BookDOExample {
      * @mbg.generated do_not_delete_during_merge
      */
     public static class Criteria extends GeneratedCriteria {
-
         protected Criteria() {
             super();
         }