* Update installer.py
Revising the `installer.py` script. The script is facing an issue during execution as it required interactive input for the root username unless the username was provided as a flag 42f9e537d0/frappe/installer.py (L157-L158). Resolving this by passing the username as a flag allows the script to proceed successfully.
* ci: pin pre-commit/prettier to 3.5.2
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Co-authored-by: Revant Nandgaonkar <revant.one@gmail.com>