Snap: Add fmt dependency

[luzpaz]

https://github.com/FreeCAD/FreeCAD-Bundle/pull/160

Edit: need to find where to add this dependency in the snap building process

[adrianinsaval]

no real need to do this since the snap build process has access to the internet so freecad auto fetches the required sources and builds it, if that wasn't the case the build would have been failing.

[yorikvanhavre]

So this can be closed?

[adrianinsaval]

Yes