how to run travis unit tests to check compatibility between set-misc-0.32 and nginx-1.21.3

[MuthuChess]

Hi Team,

Please suggest how to run unit tests for version v0.32 against ngnix 1.21.3.

Reason why i am asking:
I was following the official nginx docker documentation to add set-misc to nginx image https://github.com/nginxinc/docker-nginx/tree/master/modules#adding-third-party-modules-to-nginx-official-image..

The repository is pulling set-misc v0.32. I checked that set-misc 0.32 is working with nginx:mainline (right now 1.21.3) but would like to confirm by running the travis unit tests similar to #66.

Regards,
Muthu