Update git to support updates of submodules (#2378)

* Update git to support updates of submodules

* Remove unnecessary-comprehension

* prefix with **

supervisor/store/git.py

@@ -159,6 +159,19 @@ class GitRepo(CoreSysAttributes):
                     ft.partial(self.repo.git.reset, f"origin/{branch}", hard=True)
                 )
 
+                # Update submodules
+                await self.sys_run_in_executor(
+                    ft.partial(
+                        self.repo.git.submodule.root.update,
+                        **{
+                            "recursive": False,
+                            "init": True,
+                            "force_remove": True,
+                            "force_reset": True,
+                        },
+                    )
+                )
+
                 # Cleanup old data
                 await self.sys_run_in_executor(ft.partial(self.repo.git.clean, "-xdf"))