Update build.yml

Author: staabm

.github/workflows/build.yml

@@ -263,7 +263,6 @@ jobs:
 
       - name: "Determine default branch"
         id: default-branch
-        working-directory: phpstan-dist
         run: |
           echo "name=$(git remote show origin | sed -n '/HEAD branch/s/.*: //p')" >> $GITHUB_OUTPUT