try to fix LTS prerelease workflow

[geekosaur]

It's being skipped, not failing to fire, implying the wrong ref? This subsumes #10415.

Template B: This PR does not modify behaviour or interface

E.g. the PR only touches documentation or tests, does refactorings, etc.

Include the following checklist in your PR:

• Patches conform to the coding conventions.
• Is this a PR that fixes CI? If so, it will need to be backported to older cabal release branches (ask maintainers for directions). (3.12 only; 3.14 isn't an LTS release.)

[geekosaur]

Untestable until backported. ☹

[geekosaur]

@mergify backport 3.12

[mergify]

backport 3.12

🟠 Waiting for conditions to match

• merged [📌 backport requirement]

[geekosaur]

Well, not quite true, I pushed the conditional down into the actually-make-the-release step so I can verify the rest (and already found one bug) and in particular check why it's skipping (which it should in the PRs and on master but not when it lands on 3.12).

[Mikolaj]

Great, let's see if this works fine.

[geekosaur]

Per my previous comment, it won't; I'm trying to determine why with this update, along with trying a few things that I'm now pretty sure won't work. The main point, though, is to get some debug output about why it's not running when it's supposed to (currently it's always skipped even when merging to 3.12 branch). Hopefully when this lands in 3.12 it'll tell me enough that I can submit a follow-on that does make it work.

[geekosaur]

I'm not sure if the LTS prerelease should include the LTS designation in the filenames. I'm currently (once I get the code working) including it, but it could be argued that it shouldn't be there.