Ludy 17938ff5bc ci: automate Gradle and Docker image updates (#7464)
## Summary

- Add a scheduled GitHub Actions workflow that checks for the latest
stable Gradle release.
- Update the Gradle wrapper and pinned Gradle Docker build images
automatically.
- Open an automated pull request when an update is available.
- Update the developer prerequisites to Node.js 22+ and Gradle 9.0+.

## Details

The workflow runs every Monday at 03:00 UTC and can also be triggered
manually. It:

1. Resolves the latest stable Gradle version.
2. Finds the matching `gradle:<version>-jdk25` Docker image digest.
3. Updates the Gradle wrapper and Dockerfiles.
4. Verifies the resolved wrapper version and checks the resulting diff.
5. Creates or updates an automated dependency pull request.

The current wrapper and Docker image changes are included as the initial
update generated by this workflow.

## Testing

- Verified the generated changes with `git diff --check`.
- The workflow validates the wrapper version before opening the
automated pull request.
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Stirling PDF logo

Stirling PDF - The Open-Source PDF Platform

Stirling PDF is a powerful, open-source PDF editing platform. Run it as a personal desktop app, in the browser, or deploy it on your own servers with a private API. Edit, sign, redact, convert, and automate PDFs without sending documents to external services.

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Stirling PDF - Dashboard

Key Capabilities

  • Everywhere you work - Desktop client, browser UI, and self-hosted server with a private API.
  • 50+ PDF tools - Edit, merge, split, sign, redact, convert, OCR, compress, and more.
  • Automation & workflows - No-code pipelines direct in UI with APIs to process millions of PDFs.
  • Enterprisegrade - SSO, auditing, and flexible onprem deployments.
  • Developer platform - REST APIs available for nearly all tools to integrate into your existing systems.
  • Global UI - Interface available in 40+ languages.

For a full feature list, see the docs: https://docs.stirlingpdf.com

Quick Start

docker run -p 8080:8080 docker.stirlingpdf.com/stirlingtools/stirling-pdf

Then open: http://localhost:8080

For full installation options (including desktop and Kubernetes), see our Documentation Guide.

Resources

Support

Contributing

We welcome contributions! Please see CONTRIBUTING.md for guidelines.

This project uses Task as a unified command runner for all build, dev, and test commands. Run task dev to get started running the editor, run task to see the most common commands, or see the Developer Guide for full details.

For adding translations, see the Translation Guide.

License

Stirling PDF is open-core. See LICENSE for details.

S
Description
#1 Locally hosted web application that allows you to perform various operations on PDF files
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