feat: add migration to set the pgAudit config

Add migration to disable pgAudit on the app_db_user and
rdsproxyadmin user.  This is being done to save costs and
reduce the logging pressure on the database instances.

migrations/versions/0449_pgaudit_config.py

@@ -0,0 +1,24 @@
+"""
+
+Revision ID: 0449_set_pgaudit_config
+Revises: 0448_update_verify_code2
+Create Date: 2024-05-07 16:30:00
+
+"""
+from alembic import op
+
+revision = "0449_set_pgaudit_config"
+down_revision = "0448_update_verify_code2"
+
+roles = ["app_db_user", "rdsproxyadmin"]
+database_name = op.get_bind().engine.url.database  # database name that the migration is being run on
+
+
+def upgrade():
+    for role in roles:
+        op.execute(f"ALTER ROLE {role} IN DATABASE {database_name} SET pgaudit.log TO 'NONE'")
+
+
+def downgrade():
+    for role in roles:
+        op.execute(f"ALTER ROLE {role} IN DATABASE {database_name} RESET pgaudit.log")