Travis-CI isn't operating in scala/scala

[SethTisue]

It didn't run on scala/scala#9697 , which is a PR we actually need it on (since Jenkins doesn't do the Dotty check)

And we don't have a cron run to show us whether #791 is fixed

Lukas and I had talked about maybe eliminating Travis-CI from PR validation (since it's largely redundant with Jenkins, and since we only have a one-job-at-a-time plan, so it's a potential bottleneck), maybe now's the time for that, but regardless, we need Travis-CI to be working in order to do releases, and the cron job either needs to be running or be moved to GitHub Actions.

The broader discussion on the whole situation is #751 , but I made this separate ticket because we need to do something short term, even if doesn't involve longer term changes

[lrytz]

Travis ran on scala/scala#9783

[lrytz]

https://app.travis-ci.com/github/scala/scala/requests shows "could not parse" for 2.13.x

[lrytz]

scala/scala@a60217a#diff-6ac3f79fc25d95cd1e3d51da53a4b21b939437392578a35ae8cd6d5366ca5485R158 has a typo

[SethTisue]

🤦 — I'll fix it after breakfast

[SethTisue]

scala/scala@548c776

https://app.travis-ci.com/github/scala/scala/builds/239656900

👍