ESDC - Preprocessing of ERA5 is failing due to missing input files

The preprocessing of ERA5 is failing in the ESDC recipe due to missing input files. Please include ERA5 in the inputs collect section described in the recipe.

https://github.com/deepesdl/cube-gen/blob/main/ESDC/inputs-preprocess/ERA5/era5-data-cube-8d-part1.py#L8