Update dependency org.mybatis.spring.boot:mybatis-spring-boot-starter to v3.0.4 (#151)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

springboot2-mybatis-mysql-example/pom.xml

@@ -33,7 +33,7 @@
 		<dependency>
 			<groupId>org.mybatis.spring.boot</groupId>
 			<artifactId>mybatis-spring-boot-starter</artifactId>
-			<version>3.0.3</version>
+			<version>3.0.4</version>
 		</dependency>
 
 		<dependency>