Upgrade decidim to 0.28

[fblupi]

Fixes #57

[gitguardian]

⚠️ GitGuardian has uncovered 1 secret following the scan of your pull request.

Please consider investigating the findings and remediating the incidents. Failure to do so may lead to compromising the associated services or software components.

🔎 Detected hardcoded secret in your pull request

GitGuardian id	GitGuardian status	Secret	Commit	Filename
9774313	Triggered	Generic Password	376f301	.github/workflows/test.yml	View secret

🛠 Guidelines to remediate hardcoded secrets

1. Understand the implications of revoking this secret by investigating where it is used in your code.
2. Replace and store your secret safely. Learn here the best practices.
3. Revoke and rotate this secret.
4. If possible, rewrite git history. Rewriting git history is not a trivial act. You might completely break other contributing developers' workflow and you risk accidentally deleting legitimate data.

To avoid such incidents in the future consider

• following these best practices for managing and storing secrets including API keys and other credentials
• install secret detection on pre-commit to catch secret before it leaves your machine and ease remediation.

---

^{🦉 GitGuardian detects secrets in your source code to help developers and security teams secure the modern development process. You are seeing this because you or someone else with access to this repository has authorized GitGuardian to scan your pull request.}

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 93.56%. Comparing base (a1581ec) to head (52bafec).

❗ There is a different number of reports uploaded between BASE (a1581ec) and HEAD (52bafec). Click for more details.

HEAD has 1 upload less than BASE

Flag	BASE (a1581ec)	HEAD (52bafec)
	2	1

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #58      +/-   ##
==========================================
- Coverage   98.63%   93.56%   -5.07%     
==========================================
  Files          39       39              
  Lines         732      746      +14     
==========================================
- Hits          722      698      -24     
- Misses         10       48      +38     

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[HHassig]

I can't get this last test to pass:

ArgumentError:
       When assigning attributes, you must pass a hash as an argument, NilClass passed.

1. When I print the params and handler, it isn't nil, so I'm unsure what the issue is...
2. Regarding the lint error, the tests won't pass with .now and lint won't pass without it...

[fblupi]

@HHassig regarding the lint error, disable the failing Rubocop rule for that line.

[HHassig]

Perfect, thanks for showing me the ropes.

[HHassig]

Bravo!