adds cfps for 629

Signed-off-by: Nell Shamrell <[email protected]>

Author: nellshamrell

draft/2025-12-10-this-week-in-rust.md

@@ -136,7 +136,7 @@ Some of these tasks may also have mentors available, visit the task page for mor
 
 <!-- CFPs go here, use this format: * [project name - title of issue](URL to issue) -->
 <!-- * [ - ]() -->
-<!-- or if none - *No Calls for participation were submitted this week.* -->
+*No Calls for participation were submitted this week.*
 
 If you are a Rust project owner and are looking for contributors, please submit tasks [here][guidelines] or through a [PR to TWiR](https://github.com/rust-lang/this-week-in-rust) or by reaching out on [Bluesky](https://bsky.app/profile/thisweekinrust.bsky.social) or [Mastodon](https://mastodon.social/@thisweekinrust)!
 
@@ -149,6 +149,8 @@ Are you a new or experienced speaker looking for a place to share something cool
 <!-- CFPs go here, use this format: * [**event name**](URL to CFP)| Date CFP closes in YYYY-MM-DD | city,state,country | Date of event in YYYY-MM-DD -->
 <!-- or if none - *No Calls for papers or presentations were submitted this week.* -->
 
+* [**RustWeek 2026**](https://sessionize.com/rustweek-2026/) | CFP closes 2025-12-31 | Utrecht, The Netherlands | 2026-05-19 - 2026-05-20
+
 If you are an event organizer hoping to expand the reach of your event, please submit a link to the website through a [PR to TWiR](https://github.com/rust-lang/this-week-in-rust) or by reaching out on [Bluesky](https://bsky.app/profile/thisweekinrust.bsky.social) or [Mastodon](https://mastodon.social/@thisweekinrust)!
 
 ## Updates from the Rust Project