AppLab: Vulkan missing from the apk manifest. (Unity 2020.3)

There's something that's bothering me: I have developed a Unity app which uses Vulkan as its sole Graphics API.
After solving a few issues with Unity sneaking in unrequested permissions I managed to get a clear upload on the Dashboard, except for one non-fatal warning: during the validation, the system complains that the manifest reports GLES2 as its graphics API when it expects at least GLES3 but I want neither.

How do I properly report that I'm using Vulkan and only Vulkan into the manifest?