Some of the packages that depend on Base.CoreLogging._min_enabled_level are broken after #57591. One of which is Logging2, JuliaLogging/Logging2.jl#10.
The easiest fix is to add the following:
isless(a::Integer, b::LogLevel) = isless(a, b.level)
isless(a::LogLevel, b::Integer) = isless(a.level, b)
Does this seem like a reasonable fix? @IanButterworth