Update avocado to v106 (major)

[renovate[bot]]

This PR contains the following updates:

Package	Change	Age	Adoption	Passing	Confidence
avocado-framework	==103.0 -> ==106.0
avocado-framework-plugin-result-html	==103.0 -> ==106.0
avocado-framework-plugin-varianter-yaml-to-mux	==103.0 -> ==106.0

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