Fix devcontainer setup

[jzbahrai]

Summary | Résumé

Failure when setting up the admin devcontainer, this PR fixes that

Note: Ajoutez vous une nouvelle page par Articles GC? Assurez vous d'ajouter le chemin dans les règles WAF.

Test instructions | Instructions pour tester la modification

Sequential steps (1., 2., 3., ...) that describe how to test this change. This
will help a developer test things out without too much detective work. Also,
include any environmental setup steps that aren't in the normal README steps
and/or any time-based elements that this requires.

---

Étapes consécutives (1., 2., 3., …) qui décrivent la façon de tester la
modification. Elles aideront les développeurs à faire des tests sans avoir à
jouer au détective. Veuillez aussi inclure toutes les étapes de configuration
de l’environnement qui ne font pas partie des étapes normales dans le fichier
README et tout élément temporel requis.

[github-actions]

🧪 Review environment

https://wmtxmtscaa23gi3bkfiu7e265e0zdoke.lambda-url.ca-central-1.on.aws/

[smcmurtry]

I'm getting the following failure when trying to build the dev container:
3.714 E: Unable to locate package eza

And I'm able to build the dev container in the main branch without any errors.

[jimleroyer]

🙇

[jimleroyer]

Looks good, let's make sure cypress still work after the removal of libgconf-2-4. It seems that this is a dependency for older version of cypress, so that might still work after its removal here, as we would have carried this dep since then.

[smcmurtry]

This is now building for me and the tests are passing. Nice!

[smcmurtry]

Although I think this did break the copilot chat integration... is there any way to fix that?