Bump Pythonnet to allow usage with python3.12

[FranzForstmayr]

This Patch Bumps pythonnet to 3.0.3 which allows to install it on python3.12

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[maxcapodi78]

@FranzForstmayr @SMoraisAnsys we need to check if we have to use ansys-pythonnet or pythonnet.

[MaxJPRey]

@FranzForstmayr @SMoraisAnsys we need to check if we have to use ansys-pythonnet or pythonnet.

@maxcapodi78 Yes, it is pending 😃 .

[SMoraisAnsys]

Talks should happen today about using https://github.com/ansys/ansys-pythonnet (and updating it to reach pythonnet 3.0.3 changes) or switch to pythonnet original repo

[FranzForstmayr]

Any updates? Or should I close this PR?

[SMoraisAnsys]

Any updates? Or should I close this PR?

Don't close it. I'm sorry for not coming back, I had to focus on other stuff this days.
I should talk with @koubaa tomorrow and should be able to give you an answer afterward :)

[SMoraisAnsys]

A year ago a fork of pythonnet was created (https://github.com/ansys/ansys-pythonnet) because there were changes that made it difficult to work around pymechanical.
This fork is almost equal to the original repo (https://github.com/pythonnet/pythonnet) except for :

Changes relative to pythonnet: - Revert of https://github.com/pythonnet/pythonnet/pull/1240.
- Enum REPR #2239 <https://github.com/pythonnet/pythonnet/pull/2239> is included in this release of version 3.0.2, but is unreleased in pythonnet

As we are trying to have a set of common packages for Ansys products, I would prefer using Ansys's fork. It is not yet up to date but should be soon as a PR (ansys/ansys-pythonnet#13) merges changes from pythonnet 3.0.3
When the ansys-pythonnet PR is accepted, could you update this PR to use the right ansys-pythonnet version ?

[SMoraisAnsys]

@FranzForstmayr Thanks for the modifications. Could you try the new release ansys-pythonnet==v3.1.0-rc3 (v3.1.0-rc3 ) ?
This release should be up to date with pythonnet except for the commit reverted :)

[SMoraisAnsys]

LGTM