chore(deps): update helm/chart-testing-action action to v2.8.0

[renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
helm/chart-testing-action	action	minor	v2.7.0 -> v2.8.0

---

Release Notes

helm/chart-testing-action (helm/chart-testing-action)

v2.8.0

Compare Source

What's Changed

• Bump the actions group across 1 directory with 4 updates by @​dependabot[bot] in #​171
• Fix the broken link for GitHub Help Documentation by @​subramani95 in #​174
• bump ct and yamale version by @​cpanato in #​178
• Bump actions/checkout from 4.2.2 to 5.0.0 by @​dependabot[bot] in #​181
• Bump actions/setup-python from 5.4.0 to 6.0.0 by @​dependabot[bot] in #​179
• Bump the actions group across 1 directory with 2 updates by @​dependabot[bot] in #​183
• Use uv instead of python venv by @​nikolaik in #​172
• Bump sigstore/cosign-installer from 3.8.1 to 4.0.0 by @​dependabot[bot] in #​184

New Contributors

• @​subramani95 made their first contribution in #​174
• @​nikolaik made their first contribution in #​172

Full Changelog: helm/chart-testing-action@v2...v2.8.0

---

Configuration

📅 Schedule: Branch creation - At any time (no schedule defined), Automerge - At any time (no schedule defined).

🚦 Automerge: Disabled by config. Please merge this manually once you are satisfied.

♻ Rebasing: Whenever PR becomes conflicted, or you tick the rebase/retry checkbox.

🔕 Ignore: Close this PR and you won't be reminded about this update again.

---

• If you want to rebase/retry this PR, check this box

---

This PR was generated by Mend Renovate. View the repository job log.

[snazy]

Depends on apache/infrastructure-actions#350