如何在Apring Boot的yml文件中配置druid数据源，请写出相关代码

在Spring Boot的yml文件中配置Druid数据源，可以参考以下代码：

```yaml
spring:
datasource:
druid:
url: jdbc:mysql://localhost:3306/your_database?useUnicode=true&characterEncoding=utf8&useSSL=false&serverTimezone=UTC
username: your_username
password: your_password
driver-class-name: com.mysql.cj.jdbc.Driver
initial-size: 5
min-idle: 5
max-active: 20
max-wait: 60000
time-between-eviction-runs-millis: 60000
min-evictable-idle-time-millis: 300000
validation-query: SELECT 1 FROM DUAL
test-while-idle: true
test-on-borrow: false
test-on-return: false
pool-prepared-statements: true
max-pool-prepared-statement-per-connection-size: 20
filters: stat,wall,log4j
connection-properties: druid.stat.mergeSql=true;druid.stat.slowSqlMillis=5000
```

请将`your_database`、`your_username`和`your_password`替换为实际的数据库名称、用户名和密码。