fix(ci): Drop NodeJS 14 tests for non-darwin jobs

[breautek]

Platforms affected

CI

Motivation and Context

non-darwin jobs is still testing with NodeJS 14 which isn't a supported environment anymore since #1305

Description

Dropped NodeJS 14 from non-darwin test matrix.

Testing

CI will do it's thing.

Checklist

• I've run the tests to see all new and existing tests pass
• I added automated test coverage as appropriate for this change
• Commit is prefixed with (platform) if this change only applies to one platform (e.g. (android))
• If this Pull Request resolves an issue, I linked to the issue in the text above (and used the correct keyword to close issues using keywords)
• I've updated the documentation if necessary