Self-hosted Palette upgrade guides

[yuliiiah]

Describe the Change

This PR documents the process of upgrading self-hosted Palette instances installed on Kubernetes and VMware.

Review Changes

💻 Preview URLs:

• Upgrade
• Upgrade Notes
• VMware Non-airgap
• VMware Airgap
• Kubernetes Non-airgap
• Kubernetes Airgap

🎫 DOC-1045
🎫 DOC-1088

[netlify]

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[github-actions]

Remaining comments which cannot be posted as a review comment to avoid GitHub Rate Limit

vale

docs/docs-content/enterprise-version/upgrade/upgrade-k8s/airgap.md|235 col 55| [Vale.Spelling] Did you really mean 'separetely'?
docs/docs-content/enterprise-version/upgrade/upgrade-k8s/airgap.md|270 col 21| [spectrocloud.longform] Avoid using the short form of commands. Replace the short form flag in 'zip -d' with the corresponding long form flag.
docs/docs-content/enterprise-version/upgrade/upgrade-k8s/airgap.md|415 col 22| [spectrocloud.ableism] Avoid using ableism terms. Use 'issue' instead of 'run'.
docs/docs-content/troubleshooting/palette-upgrade.md|13 col 1| [Vale.Terms] Use 'we' instead of 'We'.

[vault-token-factory-spectrocloud]

Images automagically compressed by Calibre's image-actions ✨

Compression reduced images by 64.6%, saving 283.62 KB.

Filename	Before	After	Improvement	Visual comparison
static/assets/docs/images/enterprise-version_upgrade-upgrade_vmware_non-airgap_copy_configurations.webp	138.35 KB	37.92 KB	-72.6%	View diff
static/assets/docs/images/enterprise-version_upgrade-upgrade_vmware_non-airgap_update.webp	19.43 KB	18.96 KB	-2.4%	View diff
static/assets/docs/images/enterprise-version_upgrade-upgrade_vmware_non-airgap_upgrade-preview.webp	207.04 KB	83.09 KB	-59.9%	View diff
static/assets/docs/images/enterprise-version_upgrade-upgrade_vmware_non-airgap_upgraded.webp	74.07 KB	15.32 KB	-79.3%	View diff

668 images did not require optimisation.

[vault-token-factory-spectrocloud]

Images automagically compressed by Calibre's image-actions ✨

Compression reduced images by 4.2%, saving 5.79 KB.

Filename	Before	After	Improvement	Visual comparison
static/assets/docs/images/enterprise-version_upgrade-upgrade_vmware_non-airgap_copy_configurations.webp	37.92 KB	36.09 KB	-4.8%	View diff
static/assets/docs/images/enterprise-version_upgrade-upgrade_vmware_non-airgap_upgrade-preview.webp	83.09 KB	79.40 KB	-4.4%	View diff
static/assets/docs/images/enterprise-version_upgrade-upgrade_vmware_non-airgap_upgraded.webp	15.32 KB	15.05 KB	-1.8%	View diff

669 images did not require optimisation.

[vault-token-factory-spectrocloud]

💔 Some backports could not be created

Status	Branch	Result
❌	version-4-0	Backport failed because of merge conflicts
❌	version-3-4	Backport failed because of merge conflicts You might need to backport the following PRs to version-3-4: - docs: refactor for self-hosted Palette DOC-465 (#1597) - docs: updated URLs to use file path context
❌	version-4-1	Backport failed because of merge conflicts You might need to backport the following PRs to version-4-1: - docs: DOC-1118 Image Conversion to webp (#2439)
✅	version-4-2
✅	version-4-3

Note: Successful backport PRs will be merged automatically after passing CI.

Manual backport

To create the backport manually run:

backport --pr 2303

Questions ?

Please refer to the Backport tool documentation and see the Github Action logs for details

[vault-token-factory-spectrocloud]

🎉 This PR is included in version 4.3.1 🎉

The release is available on GitHub release

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