ci: fix checksums file

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -195,6 +195,12 @@ jobs:
         with:
           name: compose
           path: ${{ env.DESTDIR }}
+      -
+        name: Create checksums
+        working-directory: ${{ env.DESTDIR }}
+        run: |
+          find . -type f -print0 | sort -z | xargs -r0 shasum -a 256 -b | sed 's# .*/#  #' > checksums.txt
+          shasum -a 256 -U -c checksums.txt
       -
         name: License
         run: cp packaging/* ${{ env.DESTDIR }}/