In the v4.2.4 schema the following columns are listed as 'text' type columns.

.   learning_outcome_dim.description
.   module_dim.name

In the MySQL specific liquid files, the learning_outcome_dim table was failing
to be generated at all (due to a DDL syntax error).  The module_dim.name
column was too short for some of our actual data and that was generating an
error.  I went back to the `schema.json` and made adjustment to both file
(fixing the syntax error and adjusting the column spec).

I also applied similar changes to the MSSQL, Oracle, and PostgresQL variants.
I am unable to verify that these are syntactically correct, but they match
the similar constructs for other tables in their respective dialects.

After some discussions we are reducing the max size for the name column
to 512 characters for each RDBMS.