fix(exams): fix exam booked count and available count (#511) #1

	name: Checks
	on:
	push:
	branches:
	- main
	- develop
	pull_request:
	types:
	- opened
	- reopened
	- synchronize

	jobs:
	checks:
	runs-on: ubuntu-latest
	strategy:
	matrix:
	check: [lint, format, types]
	name: "Code linting: ${{ matrix.check }}"
	steps:
	- name: Checkout
	uses: actions/checkout@v4
	with:
	fetch-depth: 0
	- name: Cache node modules
	uses: actions/cache@v4
	with:
	path: ./node_modules
	key: ${{ runner.os }}-npm-${{ hashFiles('./package-lock.json') }}
	- name: Setup .npmrc
	run: printf '@polito:registry=https://npm.pkg.github.com\n//npm.pkg.github.com/:_authToken=${{ secrets.GITHUB_TOKEN }}\n' > .npmrc
	- name: Install npm dependencies
	run: npm install
	- name: Run check
	run: npm run ${{ matrix.check }}:check

Provide feedback