gitignored files removed after update

[hparfr]

Describe the problem

When a file from the template is in gitignore, this file is created with copier copy but then removed by copier update

I don't expect this file to be removed after an update.

Template

.env
copier.yml
{{ _copier_conf.answers_file }}.jinja

To Reproduce

$ git init && echo ".env" >> .gitignore && git add .gitignore && git commit -m "first"
$ copier copy file:///pathtothetemplate/.git .
Copying from template version 0.0.0.post10.dev0+a4f9293
 identical  .
    create  .copier-answers.yml
    create  .env

# answer to the questions
$ git add .copier-answers.yml && git commit -m "+answers"
$ ls .env
.env
$ copier update
# answer to the questions
Copying from template version 0.0.0.post10.dev0+a4f9293
 identical  .
 identical  .copier-answers.yml
 identical  .env

$ ls .env
error: file not found

Logs

No response

Expected behavior

1. consistency

after copier copy && git add . && git commit -m""
copier update shoud not change a thing

2. feature

I expect to manage gitignored files with copier

Screenshots/screencasts/logs

No response

Operating system

Linux

Operating system distribution and version

Ubuntu

Copier version

copier 7.2.0

Python version

Python 3.11.2

Installation method

pip+pypi

Additional context

Why I gitignore some files ?

I have a setup with two templates, one with answers shared with the team (project structure), and another with answsers not shared (db credentials, user related config...).
I make use of https://copier.readthedocs.io/en/stable/configuring/#applying-multiple-templates-to-the-same-subproject

[hparfr]

This bug is still present in copier 8.3.0