Add missing table truncates

Author: md5sha256

realty-common/src/test/java/io/github/md5sha256/realty/database/AbstractDatabaseTest.java

@@ -62,6 +62,7 @@ void truncateTables() throws SQLException {
              Statement stmt = conn.createStatement()) {
             stmt.execute("""
                     SET FOREIGN_KEY_CHECKS = 0;
+                    TRUNCATE TABLE RealtySign;
                     TRUNCATE TABLE AgentHistory;
                     TRUNCATE TABLE FreeholdHistory;
                     TRUNCATE TABLE LeaseholdHistory;