fix incompatibility with python < 3.9

Author: unverbuggt

README.md

@@ -62,7 +62,7 @@ Install the package from source with pip:
 ```bash
 cd mkdocs-encryptcontent-plugin/
 python setup.py sdist bdist_wheel
-pip install dist/mkdocs_encryptcontent_plugin-2.4.0-py3-none-any.whl
+pip install dist/mkdocs_encryptcontent_plugin-2.4.1-py3-none-any.whl
 ```
 
 Enable the plugin in your `mkdocs.yml`:

encryptcontent/plugin.py

@@ -240,7 +240,7 @@ def on_config(self, config, **kwargs):
         # Enable experimental code .. :popcorn:
         elif self.config['search_index'] == 'dynamically':
             logger.info("EXPERIMENTAL search index encryption enabled.")
-        self.config['encrypted_something'] = self.config['inject'] | self.config['encrypted_something'] #add inject to encrypted_something
+        self.config['encrypted_something'] = {**self.config['inject'], **self.config['encrypted_something']} #add inject to encrypted_something
         # Get path to site in case of subdir in site_url
         self.config['site_path'] = urlsplit(config.data["site_url"] or '/').path[1::]
 

setup.py

@@ -11,7 +11,7 @@ def read(fname):
 
 setup(
     name='mkdocs-encryptcontent-plugin',
-    version='2.4.0',
+    version='2.4.1',
     author='unverbuggt',
     author_email='[email protected]',
     description='A MkDocs plugin that encrypt/decrypt markdown content with AES',