Follow ups on Github actions

[vinitamurthi]

Github actions doesn't have a few features so we should add scripts to do the following:

• [ ] Auto cancel redundant builds (We could potentially use an existing action for this)

• [ ] Upload readable versions of the gradle test run reports. Right now they are in their default XML format but we could potentially upload it with the stacktrace

• [ ] Consolidate some of the commands in the actions yaml into scripts instead so that it can be used in other places, and tested locally as well

[anandwana001]

@BenHenning I din't remember the PR, but I think we do have Auto cancel redundant builds in one of your ongoing PR?

[BenHenning]

I think we've done all of these at this point (though the last point we could do more of, but the current same-repo actions are very limited so there's not a lot we can do there at the moment).