Dependency on old unmaintained version of javamail 1.6.2 should be updated to use jakarta.mail

[debanshu]

The current pom depends on the older unmaintained javax.mail namespace

(Even though the README says this project does not depend on javax.mail)

<dependency>
    <groupId>com.sun.mail</groupId>
    <artifactId>javax.mail</artifactId>
    <version>${version.javamail}</version>
</dependency>
        
<version.javamail>1.6.2</version.javamail>

I think we should either remove this dependency (to stay true to the README) or update to use the currently maintained jakarta.mail namespace

<dependency>
  <artifactId>jakarta.mail</artifactId>
  <groupId>com.sun.mail</groupId>
</dependency>