[Bug]: Jenkins LTS track workflow doesn't correctly identify the LTS releases from upstream

[kz6fittycent]

What happened?

The workflow syntax for the LTS track wasn't able to correctly find the right LTS release.

What should have happened?

The latest LTS release from upstream should be identified.

Output of snap info $snap_name

n/a

Output of snap connections $snap_name

n/a

Output of snap version

`lts/stable:       2.440.3`

Relevant log output

n/a

Teminal output of app

n/a

[jnsgruk]

Fixed in #106