Preflight workflow update (#5771)
- New and updated vars
- New runner vars
- Runners rename (see https://github.com/paritytech/ci_cd/issues/1039)
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Co-authored-by: 
Oliver Tale-Yazdi <[email protected]>
- New and updated vars
- New runner vars
- Runners rename (see https://github.com/paritytech/ci_cd/issues/1039)
---------
Co-authored-by: Oliver Tale-Yazdi <[email protected]>