[FAB-10235] Update BYFN to use V1_2 capability

Update BYFN to use V1_2 application capability.
Required for private data collections.

Change-Id: I56c74b9fb6cd77864b5c8d13abb066a3d729500b
Signed-off-by: David Enyeart <enyeart@us.ibm.com>

first-network/configtx.yaml

@@ -104,11 +104,11 @@ Capabilities:
  # manipulated without concern for upgrading orderers. Set the value of the
  # capability to true to require it.
  Application: &ApplicationCapabilities
- # V1.1 for Application is a catchall flag for behavior which has been
+ # V1.2 for Application is a catchall flag for behavior which has been
  # determined to be desired for all peers running v1.0.x, but the
  # modification of which would cause incompatibilities. Users should
  # leave this flag set to true.
- V1_1: true
+ V1_2: true
 
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