[ATMOSPHERE-335] Switch to "chart-vendor" (#1726)

This is an automated cherry-pick of #1719
/assign mnaser
diff --git a/tox.ini b/tox.ini
index a361b7d..6e55c35 100644
--- a/tox.ini
+++ b/tox.ini
@@ -29,17 +29,9 @@
 [testenv:sync-charts]
 skipsdist = True
 deps =
-  aiopath
-  aiofiles!=24.1.0
-  aioshutil
-  asynctempfile
-  GitPython
-  platformdirs
-  pydantic
-  pydantic-yaml
-  python-gerrit-api
+  chart-vendor
 commands =
-  python3 {toxinidir}/build/sync-charts.py
+  chart-vendor
 
 [testenv:linters]
 skipsdist = True
@@ -48,7 +40,7 @@
   pre-commit
 commands =
   pre-commit run --all-files --show-diff-on-failure
-  python3 {toxinidir}/build/sync-charts.py --check
+  chart-vendor --check
   python3 {toxinidir}/build/lint-jobs.py
 
 [testenv:py3]