Increase BentoPDF RAM requirement from 2GB to 4GB (#10449)

* Initial plan

* Increase BentoPDF RAM requirement from 2GB to 4GB

- Update var_ram from 2048 to 4096 in ct/bentopdf.sh
- Update ram from 2048 to 4096 in frontend/public/json/bentopdf.json
- Fixes out-of-memory crashes during installation and updates
- Build process requires more memory than previously allocated

Co-authored-by: MickLesk <47820557+MickLesk@users.noreply.github.com>

* Bump ConvertX to Debian 13 (#10450)

---------

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: MickLesk <47820557+MickLesk@users.noreply.github.com>

frontend/public/json/bentopdf.json

@@ -20,7 +20,7 @@
       "script": "ct/bentopdf.sh",
       "resources": {
         "cpu": 1,
-        "ram": 2048,
+        "ram": 4096,
         "hdd": 4,
         "os": "debian",
         "version": "13"