[gha] Update actions/upload-artifact@v3 -> actions/upload-artifact@v4

[geropl]

Description

Motivation: https://github.com/gitpod-io/gitpod/actions/runs/12814148747/job/35730430190#step:4:3

https://github.blog/changelog/2024-04-16-deprecation-notice-v3-of-the-artifact-actions/

Related Issue(s)

Fixes #

How to test

• ran "workspace integration tests" using this branches workflows, checkout works: https://github.com/gitpod-io/gitpod/actions/runs/12824451012/job/35760658348 ✔️

Documentation

Preview status

gitpod:summary

Build Options

Build

• /werft with-werft
  Run the build with werft instead of GHA
• leeway-no-cache
• /werft no-test
  Run Leeway with --dont-test

Publish

• /werft publish-to-npm
• /werft publish-to-jb-marketplace

Installer

• analytics=segment
• with-dedicated-emulation
• workspace-feature-flags
  Add desired feature flags to the end of the line above, space separated

Preview Environment / Integration Tests

• /werft with-local-preview
  If enabled this will build install/preview
• /werft with-preview
• /werft with-large-vm
• /werft with-gce-vm
  If enabled this will create the environment on GCE infra
• /werft preemptible
  Saves cost. Untick this only if you're really sure you need a non-preemtible machine.
• with-integration-tests=all
  Valid options are all, workspace, webapp, ide, jetbrains, vscode, ssh. If enabled, with-preview and with-large-vm will be enabled.
• with-monitoring

/hold

[geropl]

/unhold