This change stops act from rejecting valid entries such as
```
timeout-minutes: ${{ matrix.runtime == 'v8' && 30 || 15 }}
```
at the job level.
This change complements the fix that was already in place
for the Step struct, done in #1217. See:
52f5c4592c
Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>