Update helm/chart-testing-action action to v2.7.0

[small-hack-renovate]

This PR contains the following updates:

Package	Type	Update	Change
helm/chart-testing-action	action	minor	v2.6.1 -> v2.7.0

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Release Notes

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

v2.7.0

Compare Source

For ct change see https://github.com/helm/chart-testing/releases/tag/v3.12.0

What's Changed

• docs: update all version references to latest versions by @​froblesmartin in https://github.com/helm/chart-testing-action/pull/141
• update ct to v3.11.0 / yamlint to 1.33.0 / yamale to 4.0.4 / add e2e test by @​cpanato in https://github.com/helm/chart-testing-action/pull/144
• use ct 3.12.0 as default by @​cpanato in https://github.com/helm/chart-testing-action/pull/165
• clean up and fix cr action next release by @​cpanato in https://github.com/helm/chart-testing-action/pull/166

New Contributors

• @​froblesmartin made their first contribution in https://github.com/helm/chart-testing-action/pull/141

Full Changelog: helm/chart-testing-action@v2.6.1...v2.7.0

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