swagger-codegen-maven-plugin server code generation

I am trying to generate the server code using swagger-codegen-maven-plugin but it is generating the code with swagger 1.5 annotations like @ApiModel and @ApiModelProperty and not using @Operation & @Schema.

I am using the following config and dependencies in pom:

<plugin>
            <!-- code gen start -->
            <groupId>io.swagger.codegen.v3</groupId>
            <artifactId>swagger-codegen-maven-plugin</artifactId>
            <version>3.0.20</version>
            <executions>
                <execution>
                    <goals>
                        <goal>generate</goal>
                    </goals>
                    <configuration>
                        <inputSpec>${project.basedir}/src/main/resources/openapi/${project.name}.yml</inputSpec>
                        <language>spring</language>
                        <!--<packageName>${client.base.package.name}</packageName>
                        <modelPackage>${client.base.package.name}.model</modelPackage>
                        <apiPackage>${client.base.package.name}.api</apiPackage>
                        <invokerPackage>${client.base.package.name}.invoker</invokerPackage>-->

                        <output>${project.build.directory}/generated-sources/openapi</output>
                        <apiPackage>${project.groupId}.generated.api</apiPackage>
                        <modelPackage>${project.groupId}.generated.model</modelPackage>
                        <generateSupportingFiles>false</generateSupportingFiles>

                        <configOptions>
                            <groupId>${project.groupId}</groupId>
                            <artifactId>${project.artifactId}</artifactId>
                            <artifactVersion>${project.version}</artifactVersion>
                            <!--<library>resttemplate</library>-->
                            <java8>true</java8>
                            <dateLibrary>java8</dateLibrary>
                            <interfaceOnly>true</interfaceOnly>
                           <!-- <licenseName>Apache 2.0</licenseName>
                            <licenseUrl>https://www.apache.org/licenses/LICENSE-2.0</licenseUrl>-->
                        </configOptions>
                    </configuration>
                </execution>
            </executions>
           <!-- <dependencies>
                <dependency>
                    <groupId>io.swagger.codegen.v3</groupId>
                    <artifactId>swagger-codegen-generators</artifactId>
                    <version>1.0.20</version>
                </dependency>
            </dependencies>-->
        </plugin>
        <!-- code gen end -->


 <dependency>
        <groupId>io.swagger.core.v3</groupId>
        <artifactId>swagger-annotations</artifactId>
        <version>2.1.9</version>
    </dependency>

Start with the swagger-codegen-maven-plugin configuration using the spring language and the generated server output. Check how the generator handles the supplied OpenAPI specification and the swagger-annotations 2.1.9 dependency. Done means generated server code uses @Operation and @Schema rather than the reported older annotations.