build: fetch complete git history

In order to build a image with which contains the correct git version
SHA we need to complete git tree. Otherwise 'git describe' only returns
the last tag name.

Signed-off-by: Daniel Wagner <dwagner@suse.de>

.github/workflows/appimage.yml

@@ -17,6 +17,8 @@ jobs:
       image: ghcr.io/igaw/linux-nvme/debian:latest
     steps:
      - uses: actions/checkout@v4
+       with:
+         fetch-depth: 0
      - name: build
        run: |
          scripts/build.sh appimage