Yes, you can. Not so very long ago, one of our ministers gave a speech in Norwegian, a language that she had just learned and wanted to demonstrate to all of us. It does literally mean any language.
Again notification is required because if we couldn't find an interpreter for that language, we might go back to the person and tell them if they speak it, no one will understand what they're saying because we can't find anyone to interpret it. But fundamentally yes, there is no restriction on language.