Upgrade backend

[JuzerShakir]

This PR includes the following changes:

Gems

Gem	Before	Now
bundler	2.3.26	2.4.21
bcrypt	3.1.18	3.1.19
capybara	3.38.0	3.39.2
faker	3.1.0	3.2.2
friendly_id	5.5.0	5.5.1
pagy	6.0	6.2
pg	1.4.5	1.5.4
puma	5.6.5	6.4.0
rails	7.0.4.3	7.1.2
ransack	3.2.1	4.1.1
redis	4.0	5.0.8
ruby	3.1.2	3.2.2
selenium-webdriver	4.7	4.15
simple_form	5.1	5.3

---

Tests

Updating the capybara & selenium-webdriver gems have significantly decreased the runtime of tests.

Metric	Before	Now	Percentage Improvement
Load time	~1.6 secs	~1.2secs	25%
Run time	~48 sec	~40 sec	16.67%

---

CI

We can see similar performance improvement in the runtime of GitHub Action (lint-n-test):

PR	Before	After	Percentage Improvement
Rails Way	~4min 40 sec
Update Fly.io & CI		~2min 40 sec	42.9%
This PR	~2min 40 sec	~1min 57secs	26.9%

Overall improvement is 58.21% from ~4mins 40secs to ~1min 57secs.