ci: use fetch-depth instead of fetch-tags (#807)

Reviewed-on: https://gitea.com/gitea/helm-chart/pulls/807
Reviewed-by: justusbunsi <justusbunsi@noreply.gitea.com>
Co-authored-by: pat-s <patrick.schratz@gmail.com>
Co-committed-by: pat-s <patrick.schratz@gmail.com>

.gitea/workflows/changelog.yml

@@ -15,7 +15,7 @@ jobs:
           apk add -q --update --no-cache nodejs curl jq sed
       - uses: actions/checkout@v4
         with:
-          fetch-tags: true
+          fetch-depth: 0
       - name: Generate upcoming changelog
         run: |
           git sv rn -o changelog.md