pass global context through cobra

cmd/restic/cmd_migrate.go

@@ -24,7 +24,7 @@ Exit status is 0 if the command was successful, and non-zero if there was any er
 `,
 	DisableAutoGenTag: true,
 	RunE: func(cmd *cobra.Command, args []string) error {
-		return runMigrate(globalCtx(), migrateOptions, globalOptions, args)
+		return runMigrate(cmd.Context(), migrateOptions, globalOptions, args)
 	},
 }