Merge pull request #1815 from baomidou/dependabot/gradle/org.slf4j-slf4j-api-1.7.29

Bump slf4j-api from 1.7.28 to 1.7.29

build.gradle

@@ -49,7 +49,7 @@ ext {
 
         "javax.servlet-api"          : "javax.servlet:javax.servlet-api:4.0.1",
         "aspectjweaver"              : "org.aspectj:aspectjweaver:1.9.4",
-        "slf4j-api"                  : "org.slf4j:slf4j-api:1.7.28",
+        "slf4j-api"                  : "org.slf4j:slf4j-api:1.7.29",
         "logback-classic"            : "ch.qos.logback:logback-classic:1.2.3",
         //copy
         "mybatis-spring-boot-starter": "org.mybatis.spring.boot:mybatis-spring-boot-starter:${mybatisSpringBootStarterVersion}",