chore(deps): update peter-evans/create-pull-request action to v6 (#5683)

Signed-off-by: milkmaker <milkmaker@mailcow.de>
Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

.github/workflows/update_postscreen_access_list.yml

@@ -22,7 +22,7 @@ jobs:
           bash helper-scripts/update_postscreen_whitelist.sh
 
     - name: Create Pull Request
-      uses: peter-evans/create-pull-request@v5
+      uses: peter-evans/create-pull-request@v6
       with:
         token: ${{ secrets.mailcow_action_Update_postscreen_access_cidr_pat }}
         commit-message: update postscreen_access.cidr