Fix H2 JDBC schema init script (#2564)

Change additional_properties column type from JSONB to TEXT in schema-v3.sql, since JSOnB is not a valid H2 type.

Author: adutra

persistence/relational-jdbc/src/main/resources/h2/schema-v3.sql

@@ -135,6 +135,6 @@ CREATE TABLE IF NOT EXISTS events (
     principal_name TEXT,
     resource_type TEXT NOT NULL,
     resource_identifier TEXT NOT NULL,
-    additional_properties JSONB NOT NULL DEFAULT '{}'::JSONB,
+    additional_properties TEXT NOT NULL,
     PRIMARY KEY (event_id)
 );