convert map to list for apprise function call

fix apprise config schema
remove apprise from required dependencies

borgmatic/config/schema.yaml

@@ -1308,10 +1308,12 @@ properties:
                     - finish
     apprise:
         type: object
-        required: ['service_urls']
+        required: ['services']
         additionalProperties: false
         properties:
             services:
+                type: array
+                items:
                     type: object
                     required:
                         - url

borgmatic/hooks/apprise.py

@@ -53,7 +53,7 @@ def ping_monitor(hook_config, config, config_filename, state, monitoring_log_lev
     notify_type = state_to_notify_type[state.name.lower()]
 
     apprise_object = apprise.Apprise()
-    apprise_object.add(map(lambda service: service['url'], hook_config.get('services')))
+    apprise_object.add(list(map(lambda service: service['url'], hook_config.get('services'))))
 
     if dry_run:
         return

setup.py

@@ -34,8 +34,7 @@ setup(
         'packaging',
         'requests',
         'ruamel.yaml>0.15.0,<0.18.0',
-        'setuptools',
-        'apprise'
+        'setuptools'
     ),
     extra_require={
         "Apprise": ["apprise"]