update dependabot action

.github/workflows/dependabot.yml

@@ -18,25 +18,14 @@ jobs:
     runs-on: ubuntu-latest
     steps:
     - uses: actions/checkout@v4
-      with:
-        # Fetch the last 2 commits instead of just 1. (Fetching just 1 commit would overwrite the whole history)
-        fetch-depth: 2
     - uses: ./.github/actions/setup-poetry-action
       with:
         poetry-version: ${{ env.POETRY_VERSION }}
         python-version: ${{ env.PYTHON_VERSION }}
         install-dependencies: false
     - name: Run poetry export
       run: poetry export -f requirements.txt --output requirements.txt --without-hashes
-    - name: Get last commit message
-      id: last-commit
-      run: |
-        echo "message=$(git log -1 --pretty=%s)" >> $GITHUB_OUTPUT
-        echo "author=$(git log -1 --pretty=\"%an <%ae>\")" >> $GITHUB_OUTPUT
     - uses: stefanzweifel/git-auto-commit-action@v5
-  with:
-    commit_author: ${{ steps.last-commit.outputs.author }}
-    commit_message: ${{ steps.last-commit.outputs.message }}
-    commit_options: --amend --no-edit
-    push_options: --force
-    skip_fetch: true
+      with:
+        commit_message: Update requirements.txt
+        branch: ${{ github.head_ref }}