fix: resolve deprecation warnings in click, ssl, and sqlalchemy

- click.MultiCommand -> click.Group in service.py and task.py
  (deprecated in Click 8.x, same API)
- ssl.PROTOCOL_TLS -> ssl.PROTOCOL_TLS_SERVER in oauth/client.py
  (deprecated since Python 3.10, project requires 3.11+)
- Table.exists()/drop()/create() -> inspector.has_table() with
  explicit bind in bulkdata/load.py (deprecated in SQLAlchemy 1.4)

Author: jstvz

cumulusci/cli/service.py

@@ -69,7 +69,7 @@ def service_list(runtime, plain, print_json):
     console.print(table)
 
 
-class ConnectServiceCommand(click.MultiCommand):
+class ConnectServiceCommand(click.Group):
     def _get_services_config(self, runtime):
         return (
             runtime.project_config.services

cumulusci/cli/task.py

@@ -107,7 +107,7 @@ def task_info(runtime, task_name):
     click.echo(rst2ansi(doc))
 
 
-class RunTaskCommand(click.MultiCommand):
+class RunTaskCommand(click.Group):
     # options that are not task specific
     global_options = {
         "no-prompt": {

cumulusci/oauth/client.py

@@ -201,8 +201,7 @@ def _create_httpd(self):
             keyfile = "key.pem"
             if not Path(certfile).is_file() or not Path(keyfile).is_file():
                 create_key_and_self_signed_cert()
-            # FIXME: Use ssl.PROTOCOL_TLS_SERVER after dropping 3.8 support
-            ssl_context = ssl.SSLContext(protocol=ssl.PROTOCOL_TLS)
+            ssl_context = ssl.SSLContext(protocol=ssl.PROTOCOL_TLS_SERVER)
             ssl_context.load_cert_chain(certfile, keyfile)
             httpd.socket = ssl_context.wrap_socket(
                 httpd.socket,

cumulusci/tasks/bulkdata/load.py

@@ -750,9 +750,9 @@ def _initialize_id_table(self, should_reset_table):
             Column("id", Unicode(255), primary_key=True),
             Column("sf_id", Unicode(18)),
         )
-        if id_table.exists():
-            id_table.drop()
-        id_table.create()
+        if self.inspector.has_table(self.ID_TABLE_NAME):
+            id_table.drop(self.metadata.bind)
+        id_table.create(self.metadata.bind)
 
     def _sqlite_load(self):
         """Read a SQLite script and initialize the in-memory database."""