springboot 整合activiti 如何自动创建数据库表？

Question

刚开始学习springboot，在整合activiti时，无法自动创建数据库表。请大神指教一下哪里出问题了？
springboot版本3.1.0
pom.xml

<!--activiti-->
        <dependency>
            <groupId>org.activiti</groupId>
            <artifactId>activiti-spring-boot-starter</artifactId>
            <version>7.1.0.M4</version>
        </dependency>
        <dependency>
            <groupId>org.activiti.dependencies</groupId>
            <artifactId>activiti-dependencies</artifactId>
            <version>7.1.0.M4</version>
            <type>pom</type>
        </dependency>
<!--   mysql     -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>8.0.12</version>
        </dependency>

application.yml

server:
  port: 8888
spring:
  datasource:
    url: jdbc:mysql://localhost:3306/demo?useSSL=false&characterEncoding=utf8&serverTimezone=UTC&nullCatalogMeansCurrent=true
    username: root
    password: root
    driver-class-name: com.mysql.cj.jdbc.Driver
  activiti:
    database-schema-update: true
    db-history-used: true
    # 历史记录存储等级
    history-level: full
    check-process-definitions: false

按照教程直接运行就可创建表，但是运行之后未创建，访问地址栏之后也未创建，问题出在哪里？