chore(deps): update actions/upload-artifact action to v6

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions/upload-artifact	action	major	v5 -> v6

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Release Notes

actions/upload-artifact (actions/upload-artifact)

v6

Compare Source

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Configuration

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[github-actions]

❌MegaLinter analysis: Error

Descriptor	Linter	Files	Fixed	Errors	Warnings	Elapsed time
✅ ACTION	actionlint	3		0	0	0.02s
✅ JSON	jsonlint	4		0	0	0.13s
✅ JSON	prettier	4		0	0	0.47s
✅ JSON	v8r	4		0	0	6.91s
✅ MARKDOWN	markdownlint	157		0	0	2.23s
✅ MARKDOWN	markdown-table-formatter	157		0	0	0.32s
✅ REPOSITORY	checkov	yes		no	no	15.74s
✅ REPOSITORY	git_diff	yes		no	no	0.06s
✅ REPOSITORY	secretlint	yes		no	no	1.72s
✅ REPOSITORY	trufflehog	yes		no	no	4.02s
✅ SPELL	cspell	187		0	0	5.09s
❌ SPELL	lychee	174		1	0	87.94s
✅ YAML	prettier	5		0	0	0.31s
✅ YAML	v8r	5		0	0	5.64s
✅ YAML	yamllint	5		0	0	0.31s

Detailed Issues

❌ SPELL / lychee - 1 error

[TIMEOUT] https://wiki.debian.org/UnattendedUpgrades | Timeout
📝 Summary
---------------------
🔍 Total..........765
✅ Successful.....713
⏳ Timeouts.........1
🔀 Redirected.......0
👻 Excluded........51
❓ Unknown..........0
🚫 Errors...........0

Errors in docs/guides/operations-guide/openstack/tools/openstack-health-monitor.md
[TIMEOUT] https://wiki.debian.org/UnattendedUpgrades | Timeout

See detailed reports in MegaLinter artifacts

Your project could benefit from a custom flavor, which would allow you to run only the linters you need, and thus improve runtime performances. (Skip this info by defining FLAVOR_SUGGESTIONS: false)

• Documentation: Custom Flavors
• Command: npx mega-linter-runner@9.2.0 --custom-flavor-setup --custom-flavor-linters ACTION_ACTIONLINT,JSON_JSONLINT,JSON_V8R,JSON_PRETTIER,MARKDOWN_MARKDOWNLINT,MARKDOWN_MARKDOWN_TABLE_FORMATTER,REPOSITORY_CHECKOV,REPOSITORY_GIT_DIFF,REPOSITORY_SECRETLINT,REPOSITORY_TRUFFLEHOG,SPELL_CSPELL,SPELL_LYCHEE,YAML_PRETTIER,YAML_YAMLLINT,YAML_V8R