CompatHelper: bump compat for AbstractNeuralNetworks to 0.5

[github-actions]

This pull request changes the compat entry for the AbstractNeuralNetworks package from 0.4 to 0.4, 0.5.
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.

[benedict-96]

initialparameters need to be adjusted to fit JuliaGNI/AbstractNeuralNetworks.jl@29ebbea.

[codecov]

Codecov Report

Attention: Patch coverage is 80.00000% with 33 lines in your changes missing coverage. Please review.

Project coverage is 64.41%. Comparing base (cde4d3f) to head (0bd231b).
Report is 11 commits behind head on main.

Files with missing lines	Patch %	Lines
src/data_loader/data_loader.jl	0.00%	6 Missing ⚠️
src/training_method/variational_method.jl	0.00%	6 Missing ⚠️
src/architectures/autoencoder.jl	71.42%	2 Missing ⚠️
src/architectures/lagrangian_neural_network.jl	50.00%	2 Missing ⚠️
src/arrays/stiefel_projection.jl	50.00%	2 Missing ⚠️
...c/kernels/tensor_transpose_tensor_transpose_mul.jl	0.00%	2 Missing ⚠️
src/training/train.jl	0.00%	2 Missing ⚠️
src/architectures/neural_network_integrator.jl	50.00%	1 Missing ⚠️
src/architectures/transformer_integrator.jl	50.00%	1 Missing ⚠️
src/arrays/symmetric.jl	83.33%	1 Missing ⚠️
... and 8 more

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #179      +/-   ##
==========================================
+ Coverage   64.38%   64.41%   +0.03%     
==========================================
  Files         119      119              
  Lines        3695     3704       +9     
==========================================
+ Hits         2379     2386       +7     
- Misses       1316     1318       +2     

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[benedict-96]

NOTE: this is set to draft until nn.params has been replaced with params(nn) everywhere in the code.