manifest: Update babblesim_ext_2G4_phy_v1 revision

Brings in:
 - A small change that makes it possible to convert
   logs to Ellisys format without using gawk extensions.
 - A bugfix for Ellisys format generation for Coded PHY

Signed-off-by: Rubin Gerritsen <rubin.gerritsen@nordicsemi.no>