Search is case sensitive when running using postgres database

[lectral]

Describe the bug

When searching for notes in memos run with PostgreSQL database search is case sensitive. This is not the case when using sqlite driver.

Steps to reproduce

• Run memos using postgress driver for database
• Add notes: "test", "Test", "test"
• Search for "test"
• Observe that only two notes are found.

The version of Memos you're using

0.22.3

Screenshots or additional context

No response