Lambda without a literal block is deprecated RB-W1004
Bug risk
Major
Autofix Lambda without a literal block is deprecated since Ruby 3.0, use the proc without lambda instead.
Bad practice
lambda(&proc { do_something })
lambda(&Proc.new { do_something })
Recommended
proc { do_something }
Proc.new { do_something }
lambda { do_something } # If you use lambda.