Password reset Link is not expiring after getting a new reset link

[Amitkumar711]

Hello Security Team

I would like to report security issue

Vulnerability Details :-

Vulnerable link : https://beancount.io/forgot-password
Vulnerability Name : Password reset Link is not expiring after getting a new reset link

Steps to reproduce :-

1. Go on password reset link
2. Put email address and get password reset link
3. Don't use the link
4. go again on login page & request a another password reset link
5. now use the old reset link to reset the password which is sent in step 2
6. link is working ! password is reset

Explanation :-
Suppose at 07:00 hrs I used password reset options of beancount.io and got a token on my email. Lets call it token 01. But i did not use it.And at 07:02 hrs I used again the password reset option and got a new token, which is token 02. Now generally after the issuance of token 02, the previous unused token should expire. But in case of beancount.io , its not happening

Mitigation :-
All unused tokens should expire automatically after the issuance of a new token

Please Fix the issues

Thanks & Regards,
Amit kumar