CompatHelper: bump compat for "DiskArrays" to "0.4"

[github-actions]

This pull request changes the compat entry for the DiskArrays package from 0.3.22 to 0.3.22, 0.4.

This keeps the compat entries for earlier versions.

Note: I have not tested your package with this new compat entry. It is your responsibility to make sure that your package tests pass before you merge this pull request.

[Alexander-Barth]

I am currently hitting this error with DiskArrays 0.4.4 and NCDatasets 2d0e7cb:

  Test threw exception
  Expression: isempty(ncv[Int[]])
  MethodError: reducing over an empty collection is not allowed; consider supplying `init` to the reducer
  Stacktrace:
    [1] reduce_empty(op::Base.MappingRF{Base.ExtremaMap{typeof(identity)}, typeof(Base._extrema_rf)}, ::Type{Int64})           
      @ Base ./reduce.jl:361
    [2] reduce_empty_iter
      @ ./reduce.jl:384 [inlined]
    [3] mapreduce_empty_iter(f::Function, op::Function, itr::Vector{Int64}, ItrEltype::Base.HasEltype)                                                                         
      @ Base ./reduce.jl:380
    [4] _mapreduce
      @ ./reduce.jl:432 [inlined]
    [5] _mapreduce_dim
      @ ./reducedim.jl:365 [inlined]
    [6] mapreduce
      @ ./reducedim.jl:357 [inlined]
    [7] _extrema
      @ ./reducedim.jl:1015 [inlined]
    [8] _extrema
      @ ./reducedim.jl:1014 [inlined]
    [9] extrema
      @ ./reducedim.jl:1010 [inlined]
   [10] span(v::Vector{Int64})
      @ DiskArrays ~/.julia/packages/DiskArrays/6JA8Z/src/batchgetindex.jl:70
   [11] #is_sparse_index#13
      @ ~/.julia/packages/DiskArrays/6JA8Z/src/batchgetindex.jl:84 [inlined]
   [12] is_sparse_index
      @ ~/.julia/packages/DiskArrays/6JA8Z/src/batchgetindex.jl:83 [inlined]
   [13] need_batch_index
      @ ~/.julia/packages/DiskArrays/6JA8Z/src/diskarray.jl:72 [inlined]
   [14] _need_batch
      @ ~/.julia/packages/DiskArrays/6JA8Z/src/diskarray.jl:57 [inlined]
   [15] need_batch
      @ ~/.julia/packages/DiskArrays/6JA8Z/src/diskarray.jl:54 [inlined]
   [16] getindex_disk!(out::Nothing, a::NCDatasets.Variable{Int64, 1, NCDataset{Nothing, Missing}}, i::Vector{Int64})                              
      @ DiskArrays ~/.julia/packages/DiskArrays/6JA8Z/src/diskarray.jl:249
   [17] getindex_disk
      @ ~/.julia/packages/DiskArrays/6JA8Z/src/diskarray.jl:210 [inlined]
   [18] getindex
      @ ~/.julia/packages/DiskArrays/6JA8Z/src/diskarray.jl:348 [inlined]
   [19] getindex(v::CommonDataModel.CFVariable{Int64, 1, NCDatasets.Variable{Int64, 1, NCDataset{Nothing, Missing}}, CommonDataModel.Attributes{NCDatasets.Variable{Int64, 1, NCDataset{Nothing, Missing}}}, @NamedTuple{fillvalue::Nothing, missing_values::Tuple{}, scale_factor::Nothing, add_offset::Nothing, calendar::Nothing, time_origin::Nothing, time_factor::Nothing, maskingvalue::Missing}}, indexes::Vector{Int64})
      @ CommonDataModel ~/.julia/packages/CommonDataModel/G3moc/src/cfvariable.jl:445
   [20] macro expansion
      @ ~/.julia/juliaup/julia-1.10.4+0.x64.linux.gnu/share/julia/stdlib/v1.10/Test/src/
Test.jl:669 [inlined]                                                                  
   [21] top-level scope
      @ ~/.julia/dev/NCDatasets/test/test_variable.jl:508
ERROR: LoadError: There was an error during testing
in expression starting at /home/abarth/.julia/dev/NCDatasets/test/test_variable.jl:275

[Alexander-Barth]

Reported also here:
JuliaIO/DiskArrays.jl#186