First of all, login your GoDaddy Workspace email account.
Enter the the extend symbol which is present on the options of the email address you need to change.
Enter the options of Edit to open the alternatives of Edit Account.
Enter your new password in the text field of Change Password and re-type your password for Confirm Password.
Then enter the button of save.
Read more here:- https://assistsuite.com/godaddy-webmail-login/