dependencies update

[t-romani]

issue #172

run bundle update on terminal to update every gem
run into a couple issues:

• first when running rails s, it would fail with

Expected to find a manifest file in `app/assets/config/manifest.js` (Sprockets::Railtie::ManifestNeededError)
But did not, please create this file and use it to link any assets that need
to be rendered by your app:

Example:
  //= link_tree ../images
  //= link_directory ../javascripts .js
  //= link_directory ../stylesheets .css
and restart your server

so following this I included the file and it worked.

• second, brakeman would report

Confidence: High
Category: Path Traversal
Check: SprocketsPathTraversal
Message: sprockets 4.0.0 has a path traversal vulnerability (CVE-2018-3760). Upgrade to sprockets 4.0.0.beta8 or newer

so followed up this thread to solve it, downgrading the gem.
Also this can be informative.

• Updated Faker::Number usage on user factory.

[santiagovidal]

Some gems like activeadmin and annotate can also be updated, but we have to change the Gemfile.

annotate's latest version is 3.0.3
activeadmin's latest version is 2.4.0

There may be more like them.

[TimoPeraza]

😃

[santib]

Good job

[JuanfraM]

good job! 👏 👏👏