[CHAOSS WEB]: Integrate Pa11y into CI/CD pipelines

### Please state the WCAG Guideline this issue falls under.

_No response_

### More on Guidelines

This is more of a process question - https://accessibility.civicactions.com/posts/automated-accessibility-testing-leveraging-github-actions-and-pa11y-ci-with-axe

Running Pa11y + axe will catch a lot of basic issues that I've found.

### Please state the WCAG Level this issue falls under.

_No response_

### Description

There is more than one way to locate a specific page in a website.

### Location

N/A

### Actual Result

N/A

### Your Evaluation

N/A

Why do I have to select someone in Who conducted this A11y test? to submit an issue. That shouldn't be a required field.

### Who is the best person to correct this?

Developer

### Who conducted this A11y test?

Victoria Ottah