Добавил зависимость для валидации и поправил RequestParam

pom.xml

@@ -5,17 +5,23 @@
     <parent>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-parent</artifactId>
-        <version>2.4.1</version>
+        <version>2.7.1</version>
         <relativePath/> <!-- lookup parent from repository -->
     </parent>
+
     <groupId>org.sadtech.example</groupId>
     <artifactId>swagger</artifactId>
     <version>0.0.1-SNAPSHOT</version>
+
     <name>swagger</name>
     <description>Demo project for Swagger</description>
 
     <properties>
-        <java.version>1.8</java.version>
+        <java.version>17</java.version>
+        <maven.compiler.source>${java.version}</maven.compiler.source>
+        <maven.compiler.target>${java.version}</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
     </properties>
 
     <dependencies>
@@ -27,12 +33,17 @@
         <dependency>
             <groupId>io.swagger.core.v3</groupId>
             <artifactId>swagger-annotations</artifactId>
-            <version>2.1.6</version>
+            <version>2.2.1</version>
         </dependency>
         <dependency>
             <groupId>org.springdoc</groupId>
             <artifactId>springdoc-openapi-ui</artifactId>
-            <version>1.5.2</version>
+            <version>1.6.9</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-validation</artifactId>
         </dependency>
     </dependencies>
 

src/main/java/org/sadtech/example/swagger/controller/PointController.java

@@ -10,7 +10,7 @@ import org.springframework.validation.annotation.Validated;
 import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RequestPart;
+import org.springframework.web.bind.annotation.RequestParam;
 import org.springframework.web.bind.annotation.RestController;
 
 import javax.validation.constraints.Min;
@@ -36,8 +36,8 @@ public class PointController {
     @Operation(summary = "Управление баллами", description = "Позволяет удалить или добавить баллы пользователю")
     public HttpStatus changePoints(
             @PathVariable @NotBlank @Parameter(description = "Идентификатор пользователя") String key,
-            @RequestPart("point") @Min(0) @Parameter(description = "Количество баллов", required = true) Long point,
+            @RequestParam("point") @Min(0) @Parameter(description = "Количество баллов", required = true) Long point,
-            @RequestPart("type") @Parameter(description = "Тип операции", required = true) TypeOperation type
+            @RequestParam("type") @Parameter(description = "Тип операции", required = true) TypeOperation type
     ) {
         final UserDto userDto = repository.get(key);
         userDto.setPoints(