Issue description

migrating a column from not null to nullable does not work

Expected Behavior

adding the nullable: true on the Entity should produce a statement that alters the table no be nullable.

Actual Behavior

the statement is missing the NULL at the end.
example
await queryRunner.query(ALTER TABLE "SCHEMA"."TABLE" ALTER ("COLUMN" nvarchar(64)));

But it should be:
await queryRunner.query(
ALTER TABLE "SCHEMA"."TABLE" ALTER ("COLUMN" nvarchar(64) NULL)
);

Steps to reproduce

I can not pass my project due to company restrictions.

But It is easy:
Before the change of nullable:

export class Enquiry {
@PrimaryGeneratedColumn("uuid")
ID: string;

@column({ length: 16 })
PROJECT_NR: string;

After
export class Enquiry {
@PrimaryGeneratedColumn("uuid")
ID: string;

@column({ length: 16, nullable: true })
PROJECT_NR: string;

My Environment

Additional Context

No response

Relevant Database Driver(s)

• aurora-mysql
• aurora-postgres
• better-sqlite3
• cockroachdb
• cordova
• expo
• mongodb
• mysql
• nativescript
• oracle
• postgres
• react-native
• sap
• spanner
• sqlite
• sqlite-abstract
• sqljs
• sqlserver

Are you willing to resolve this issue by submitting a Pull Request?

Yes, I have the time, but I don't know how to start. I would need guidance.