message: fix: migrate_roles
diff: @@ -38,6 +38,7 @@ from superset.migrations.shared.security_converge import (
  revision = "f6196627326f"
  down_revision = "143b6f2815da"
  +NEW_PVMS = {"Chart": ("can_read",)}
  PVM_MAP = {
  Pvm("Chart", "can_get_data"): (Pvm("Chart", "can_read"),),
  Pvm("Chart", "can_post_data"): (Pvm("Chart", "can_read"),),
  @@ -49,6 +50,7 @@ def upgrade():
  session = Session(bind=bind)
  # Add the new permissions on the migration itself
  + add_pvms(session, NEW_PVMS)
  migrate_roles(session, PVM_MAP)
  try:
  session.commit()
  