Merge #697: update estimated data directory size to 300 Gb

21cdcab update estimated data directory size to 300 Gb (randymcmillan)

Pull request description:

  The current actual estimate is 280 Gb.
  Rounding up per instructions.

ACKs for top commit:
  harding:
    ACK 21cdcab Thanks!

Tree-SHA512: 19563de7a24b264fbb640f0eb23e1082fc77a5158f46438b08e1e82e8687e717f6f874902a7d4151ef1b8b69b20cf52148b9f74b3e17ed635b4eeff75442e0f9

Author: harding

_data/stats.yml

@@ -1,7 +1,7 @@
 ## Size of the Bitcoin Core data directory running with default settings.
 ## Suggest rounding up by about 10% so it doesn't need to be updated
 ## too often.
-datadir_gb: "210"
+datadir_gb: "300"
 
 ## Size of the datadir with the maximum allowed pruning enabled.
 ## Suggest rounding up a little bit to give room for growth in the UTXO