In `CREATE MATERIALIZED VIEW` statements `MATERIALIZED` is not recognized as a keyword

[sean-rose]

Describe the bug
In CREATE MATERIALIZED VIEW statements MATERIALIZED is not recognized as a keyword.

To Reproduce

import sqlparse
parsed = sqlparse.parse('create materialized view x.y.z as select 1 as id')[0]
print(parsed.tokens[2].is_keyword)  # This should be True
print(parsed.tokens[2].normalized)  # This should be "MATERIALIZED" (uppercased)

Expected behavior
In CREATE MATERIALIZED VIEW statements MATERIALIZED should be recognized as a keyword, and thus should also be automatically uppercased in the normalized property.

Versions (please complete the following information):

• Python: 3.10.7
• sqlparse: 0.4.4

Additional context
N/A