feat(container): update image ghcr.io/khoj-ai/khoj to v1.15.0

[renovate[bot]]

This PR contains the following updates:

Package	Update	Change
ghcr.io/khoj-ai/khoj	minor	1.14.0 -> 1.15.0

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Release Notes

khoj-ai/khoj (ghcr.io/khoj-ai/khoj)

### [`v1.15.0`](https://togithub.com/khoj-ai/khoj/releases/tag/1.15.0) [Compare Source](https://togithub.com/khoj-ai/khoj/compare/1.14.0...1.15.0) #### 🎁 New - Add Ability to Summarize Documents by [@​MythicalCow](https://togithub.com/MythicalCow) in [https://github.com/khoj-ai/khoj/pull/800](https://togithub.com/khoj-ai/khoj/pull/800) - Support Indexing Docx Files by [@​MythicalCow](https://togithub.com/MythicalCow) in [https://github.com/khoj-ai/khoj/pull/801](https://togithub.com/khoj-ai/khoj/pull/801) - Enable Voice Chat by adding support for text-to-speech models by [@​sabaimran](https://togithub.com/sabaimran) in [https://github.com/khoj-ai/khoj/pull/821](https://togithub.com/khoj-ai/khoj/pull/821) - Support Email sign-in with Magic Links by [@​sabaimran](https://togithub.com/sabaimran) in [https://github.com/khoj-ai/khoj/pull/820](https://togithub.com/khoj-ai/khoj/pull/820) #### 🧪 Improve - Automatically Find Related Notes on Emacs in Background by [@​debanjum](https://togithub.com/debanjum) in [https://github.com/khoj-ai/khoj/pull/827](https://togithub.com/khoj-ai/khoj/pull/827) - Use User's Obsidian theme to improve Khoj Obsidian plugin styling by [@​sabaimran](https://togithub.com/sabaimran) in [https://github.com/khoj-ai/khoj/pull/825](https://togithub.com/khoj-ai/khoj/pull/825) - Add Developer support for using Next.js to create webpages by [@​sabaimran](https://togithub.com/sabaimran) in [https://github.com/khoj-ai/khoj/pull/814](https://togithub.com/khoj-ai/khoj/pull/814) - Improve Documentation to Self Host Khoj by [@​debanjum](https://togithub.com/debanjum) in [`68e7c29`](https://togithub.com/khoj-ai/khoj/commit/68e7c297e070014ddb33dc481c9b0a82e34137d7), [`6f280b1`](https://togithub.com/khoj-ai/khoj/commit/6f280b1ccc00237708bd58be0908d1b6d4fe6cdd) #### ⚒️ Fix - Sanitize user input fields on the Automation page to prevent XSS by [@​debanjum](https://togithub.com/debanjum) in [`55be90c`](https://togithub.com/khoj-ai/khoj/commit/55be90cdd2f9d6a09c8bf9ceea52fc36b9201626), [`1c7a562`](https://togithub.com/khoj-ai/khoj/commit/1c7a562880eeb7354325545d2cf6c5d1d1134812) **Full Changelog**: https://github.com/khoj-ai/khoj/compare/1.14.0...1.15.0

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