feature: Ubuntu 24.04 with x64/arm64 arch options

[Jtango18]

High Level

• Adds a build for Ubuntu:24.04 in both ARM64 and AMD64 variants to be combined into a multi-arch image.
• Ubuntu24.04 was used purely because of superior ARM64 support in a small number of tools installed

Minor Bumps

• ArgoCD - 2.13.3 > 2.14.21
• AWS IAM Authenticator - 0.6.29 > 0.7.9
• EKS CLI - 0.200.0 > 0.220.0
• GCP CLI - 505.0.0-0 > 550.0.0-0
• GCP Cloud Auth Plugin - 505.0.0-0 > 550.0.0-0
• Powershell - 7.4.6-1 > 7.5.4

Removed

• Python 2 - Unsupported on 24.04
• Octopus Legacy CLI - No ARM version

Notes

Build process matches existing WorkerTools Build Process except:

• Internally Deploys to separate Octopus Project
• Images are currently tagged with a -beta pre release tag in Dockerhub until further notice.

This will also make some local dev/build issues easier (after updates to Octopus Server) for ARM based developer devices attempting to run Intergation tests etc

[liam-mackie]

Looks great to me, and we can work on improving this to be a cleaner process in future too IMO. Good idea to append -beta to ensure people don't start using the new hotness and expect there to be no breaking changes.

[liam-mackie]

Nit: Consider updating to Helm v4 - not in this PR, but in future, I think it'd be good to include.