astro 2.1.5

#6604 7f7a8504b Thanks @Princesseuh! - Fix using optimized images in Markdown not working
#6617 38e6ec21e Thanks @MoustaphaDev! - Fix tsconfig alias regression
#6588 f42f47dc6 Thanks @bholmesdev! - Allow access to content collection entry information (including parsed frontmatter and the entry slug) from your Markdoc using the $entry variable:
```
---
title: Hello Markdoc!
---

# {% $entry.data.title %}
```
Updated dependencies [7f7a8504b]:
- @astrojs/markdown-remark@2.1.2