The following are ignored:

* literals with fewer than 5 characters
* literals with only letters, numbers, underscores, hyphens and periods
* `apiVersion` property of a resource (see rule S6874)
* `type` in nested templates
* `$schema` property
* version numbers like `1.0.0` or `1-0-0`
* escaped template expressions starting with `[[`, like `[[variables('variableName')]`
