Yes, it is possible to make a button in Google Sheets to trigger a workflow, by using Google Apps Script.
I have a similar project set up with an image button
You can edit the script here
Then assign the function to the button here
The documentation for writing the script:
You can use the script to make a call to the Make webhook with the data from your sheet. For more information, refer to the other post you created where @Rafael_Sanchez gave you a starter script.