Remove old jest-skipped-reporter module (#268)

## Problem

When running `npm audit`, we had cascading vulnerabilities ranging in
severity due to our use of the `jest-skipped-reporter`
[module](https://github.com/rickhanlonii/jest-skipped-reporter). This
module hasn't been updated in 5 years, so we really shouldn't be
depending on it.

## Solution

Remove this module. It only reported skipped tests, which I don't think
is super necessary anyways.

## Npm Audit Results

Before (recreated by checking out `main`): 
<img width="1388" alt="Screenshot 2024-08-28 at 11 13 50 AM"
src="https://github.com/user-attachments/assets/76abc278-ee7d-49a2-8723-dfd5215a7671">
<img width="1387" alt="Screenshot 2024-08-28 at 11 13 55 AM"
src="https://github.com/user-attachments/assets/a780d15a-dc39-4403-a7e5-7ee9c65bc867">


After (ran on this PR's branch): 
<img width="620" alt="Screenshot 2024-08-28 at 11 13 20 AM"
src="https://github.com/user-attachments/assets/35a5500b-ede5-4a96-a8f9-d733381db40b">


## Type of Change

- [ ] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] This change requires a documentation update
- [x] Infrastructure change (CI configs, etc)
- [x] Non-code change (docs, etc)
- [ ] None of the above: (explain here)

## Test Plan

CI passes.


---
- To see the specific tasks where the Asana app for GitHub is being
used, see below:
  - https://app.asana.com/0/0/1208058866322097

jest.config.js

@@ -4,7 +4,6 @@ module.exports = {
   reporters: [
     ['github-actions', { silent: false }],
     'jest-progress-bar-reporter',
-    'jest-skipped-reporter',
   ],
   setupFilesAfterEnv: ['./utils/globalUnitTestSetup.ts'],
   transform: {