Merge pull request #494 from ChrisRackauckas-Claude/sublibrary-downgrade-ci

ci: centralize sublibrary downgrade CI (test all sublibraries)

Author: ChrisRackauckas

.github/workflows/DowngradeSublibraries.yml

@@ -18,7 +18,6 @@ concurrency:
 
 jobs:
   downgrade-sublibraries:
-    if: false # Disabled: waiting on upstream compat fixes. See #417
     name: "Downgrade Sublibraries"
     uses: "SciML/.github/.github/workflows/sublibrary-downgrade.yml@v1"
     secrets: "inherit"