Upgrade .Net Core 3.1 binaries to .Net 6 LTS or 7

[jbpaux]

.Net Core 3.1 is currently used in many part of AKRI.
Support has ended January 10 2023.

Components should migrate to either .Net 6 which is LTS with support ending in November 2024 or .Net 7 which support ends earlier in May 2024 as it's a STS release.

https://dotnet.microsoft.com/en-us/platform/support/policy/dotnet-core

I'm not a .Net expert so maybe I'm not the most skilled for this one 😅 but I can have a look

[kate-goldenring]

Also not a .NET expert 😅. Appreciate you giving it a go!

[github-actions]

Issue has been automatically marked as stale due to inactivity for 90 days. Update the issue to remove label, otherwise it will be automatically closed.

[jbpaux]

I'll do it a little bit later when I have more time available but if someone want to do it in the meantime they're welcome. I saw it was not that hard, just need to deal with a deprecated class https://learn.microsoft.com/en-us/dotnet/core/compatibility/networking/6.0/webrequest-deprecated

[github-actions]

Issue has been automatically marked as stale due to inactivity for 90 days. Update the issue to remove label, otherwise it will be automatically closed.

[github-actions]

Issue has been automatically marked as stale due to inactivity for 90 days. Update the issue to remove label, otherwise it will be automatically closed.