Here is a guess. Those caps are just bypass caps, not anything involved in setting a frequency. The 2.2 value is likely limited by size. Datasheet says 0.1 minimum with 1 recommended. Higher value will bypass lower frequencies but become less effective for higher frequencies. So, I would say it won't make much diff which one you use. Sometimes the value is selected by how many other parts of the same value are in it. So it might help measuring other similar parts.