DBZ-7956 Fix UPDATE/DELETE statement column name resolution

Certain databases like Oracle and Db2 upper case identifiers by default while
others like PostgreSQL lowercase identifiers. The tests primarily use lower
case so this wasn't visible on PG tests; however, after adding the guard for
NullPointerException, several tests failed.  This addresses the bug for Oracle,
Db2, and PostgreSQL.

src/main/java/io/debezium/connector/jdbc/dialect/GeneralDatabaseDialect.java

@@ -763,7 +763,7 @@ protected String getQualifiedTableName(TableId tableId) {
 
     private String columnNameEqualsBinding(String fieldName, TableDescriptor table, SinkRecordDescriptor record) {
         final FieldDescriptor field = record.getFields().get(fieldName);
-        final String columnName = columnNamingStrategy.resolveColumnName(field.getColumnName());
+        final String columnName = resolveColumnName(field);
         final ColumnDescriptor column = table.getColumnByName(columnName);
         return toIdentifier(columnName) + "=" + field.getQueryBinding(column, record.getAfterStruct());
     }