fix(ci): correct pip --require-hashes usage in TOML check workflow (#5336)

# Description of Changes

This pull request updates the Python dependency installation step in the
`.github/workflows/check_toml.yml` workflow. Instead of installing a
single dependency directly, it now installs all dependencies listed in a
requirements file, which helps centralize and manage dependencies more
effectively.

Dependency management improvements:
* Changed the Python dependency installation to use the
`requirements_sync_readme.txt` file, allowing for easier updates and
consistent dependency management. (.github/workflows/check_toml.yml)

---

## Checklist

### General

- [ ] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [ ] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md)
(if applicable)
- [ ] I have performed a self-review of my own code
- [ ] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### Translations (if applicable)

- [ ] I ran
[`scripts/counter_translation.py`](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/docs/counter_translation.md)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [ ] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/devGuide/DeveloperGuide.md#6-testing)
for more details.

.github/workflows/check_toml.yml

@@ -199,8 +199,7 @@ jobs:
           python-version: "3.12"
 
       - name: Install Python dependencies
-        run: |
-          pip install --require-hashes tomli-w==1.2.0 --hash sha256:188306098d013b691fcadc011abd66727d3c414c571bb01b1a174ba8c983cf90
+        run: pip install --require-hashes -r ./.github/scripts/requirements_sync_readme.txt
 
       - name: Run Python script to check files
         id: run-check