If the DSL version is less than 0.1.5, it causes errors in an intranet environment. (#18273)

Co-authored-by: warlocgao <warlocgao@tencent.com>

api/services/plugin/dependencies_analysis.py

+from configs import dify_config
 from core.helper import marketplace
 from core.plugin.entities.plugin import ModelProviderID, PluginDependency, PluginInstallationSource, ToolProviderID
 from core.plugin.manager.plugin import PluginInstallationManager
         Generate the latest version of dependencies
         """
         dependencies = list(set(dependencies))
+        if not dify_config.MARKETPLACE_ENABLED:
+            return []
         deps = marketplace.batch_fetch_plugin_manifests(dependencies)
         return [
             PluginDependency(