fix(ci): disable Gradle caching in GitHub workflows to resolve cache conflicts (#3986)

# Description of Changes

- **What was changed**  
In all affected GitHub Actions workflow files under
`.github/workflows/`, the `cache: gradle` setting was replaced with
`cache: false # Disable Gradle caching for this job`.
- **Why the change was made**  
Gradle’s cache was causing intermittent build conflicts; disabling it
ensures each job starts from a clean state and avoids cache corruption.

#3980

---

## 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)

### 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/multiOSReleases.yml

@@ -32,7 +32,6 @@ jobs:
         with:
           distribution: 'temurin'
           java-version: '21'
-          cache: gradle
 
       # ✅ Get version from Gradle
       - name: Get version number
@@ -72,7 +71,6 @@ jobs:
         with:
           java-version: "21"
           distribution: "temurin"
-          cache: gradle
 
       - uses: gradle/actions/setup-gradle@ac638b010cf58a27ee6c972d7336334ccaf61c96 # v4.4.1
         with:
@@ -161,7 +159,6 @@ jobs:
         with:
           java-version: "21"
           distribution: "temurin"
-          cache: gradle
 
       - uses: gradle/actions/setup-gradle@ac638b010cf58a27ee6c972d7336334ccaf61c96 # v4.4.1
         with: