[pat] Fix expiration time auto-udpate

[easyCZ]

Description

Previous PR wouldn't fix it on a DB which already has existing data

Related Issue(s)

Fixes #

How to test

1. On this PR, in a workspace leeway build components/gitpod-db/go:init-testdb
2. Connect to the local db mysql -h 127.0.0.1 -P 23306 -u root -D gitpod --select-limit=200 --safe-updates -p, pw: test
3. mysql> show columns from d_b_personal_access_token;

+----------------+--------------+------+-----+----------------------+--------------------------------+
| Field          | Type         | Null | Key | Default              | Extra                          |
+----------------+--------------+------+-----+----------------------+--------------------------------+
| id             | varchar(255) | NO   | PRI | NULL                 |                                |
| userId         | varchar(255) | NO   | MUL | NULL                 |                                |
| hash           | varchar(255) | NO   | MUL | NULL                 |                                |
| name           | varchar(255) | NO   |     | NULL                 |                                |
| scopes         | text         | NO   |     | NULL                 |                                |
| expirationTime | timestamp(6) | NO   |     | CURRENT_TIMESTAMP(6) |                                |
| createdAt      | timestamp(6) | NO   | MUL | CURRENT_TIMESTAMP(6) |                                |
| _lastModified  | timestamp(6) | NO   | MUL | CURRENT_TIMESTAMP(6) | on update CURRENT_TIMESTAMP(6) |
| deleted        | tinyint(4)   | NO   |     | 0                    |                                |
+----------------+--------------+------+-----+----------------------+--------------------------------+

Release Notes

NONE

Documentation

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[AlexTugarev]

I was about to ask the question, but the ✅ came in and I lost track :-(

☝🏻 there is one expirationTime too much in the statement.

[easyCZ]

The change statement takes from and to arguments. Here we're changing the same one so both are set to the same column name
https://www.tutorialspoint.com/how-do-i-remove-on-update-current-timestamp-from-an-existing-column-in-mysql

[AlexTugarev]

The change statement takes from and to arguments.

🤦🏻‍♂️ was reading "alter table ... modify". got it.