Can I upgrade Ubuntu to 20.04 (with OLS prebuilt image)

Hi there,
We have an instance of OLS on Azure. It was installed with the prebuilt OpenLiteSpeed Wordpress image. My client deployed it, and I gather Ubuntu 18.04 was included in the image, or he selected Ubuntu 18.04.03 (I don't know if it was optional, or from the image).

Is it okay to upgrade to 20.04.04 (using `do-release-upgrade`), or will that mess something up in the OLS stack, etc.?