remove commit-flake-lock flag

.forgejo/workflows/update-dependencies.yml

@@ -16,14 +16,7 @@ jobs:
           echo "experimental-features = nix-command flakes" >> ~/.config/nix/nix.conf
 
       - uses: actions/checkout@v4
-
-      - run: |
-          git config --global user.name "${{ inputs.commit-user }}" >> $GITHUB_OUTPUT
-          git config --global user.email "${{ inputs.commit-email }}" >> $GITHUB_OUTPUT
-        shell: bash
-        name: "Configure git"
-
-      - run: nix flake update --commit-lock-file
+      - run: nix flake update
 
       - name: Create Pull Request
         uses: https://github.com/maxking/forgejo-create-pr@main