Update .github/workflows/nightly-unstable-package.yml

Co-authored-by: adamiBs <[email protected]>

Author: valeria-raif

.github/workflows/nightly-unstable-package.yml

@@ -8,4 +8,3 @@ on:
 jobs:
   build-and-test-unstable:
     uses: ./.github/workflows/pre-merge.yml@unstable
-      ref: 'unstable'