Include commit hash in draft tag name

Otherwise two builds on the same day conflict.

.github/workflows/build.yml

@@ -54,7 +54,7 @@ jobs:
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         with:
-          tag_name: draft-${{ steps.date.outputs.date }}
+          tag_name: draft-${{ steps.date.outputs.date }}-${{ github.sha }}
           release_name: Draft release ${{ steps.date.outputs.date }}
           body: Latest snapshot (${{ github.sha }})
           prerelease: true