[CI] Disable tests against ST4169

[deathaxe]

This change is required for #4015 to succeed.

We can re-enable stable tests, once the next stable release is made.

[keith-hall]

Do we know why it doesn't work as expected on current the stable build?

[deathaxe]

Yes, because indentation rule selectors make use of sublimehq/sublime_text#2152 to recursively select the correct ruleset in deeply nested alternating json objects/lists and function constructs.

var foo = {             
  case: () => {          // data: don't dedent
    switch () {
    case:                // code: dedent
      var bar = {
        case: () => {    // data: don't dedent
          ...
        }
      }        
   }
}

This is available as of ST4173.

In all builds before, selectors match the outermost contexts only and thus indentation starts to fail in on of the inner object/function blocks.

Changelog

- ...
- Improved accuracy of scope selectors
- ...

[FichteFoll]

We might also be able to use continue-on-error: true to make the action not fail checks, but it's not exactly allowing the failure.

See also actions/runner#2347.

I think in general it's not that problematic if syntax tests break on a stable build because we are, after all, targeting the next ST build which is going to be closer to the last dev build regardless.