hack/usw24: Update deadline for June 29, 2024, 10pm CEST

Signed-off-by: Razvan Deaconescu <[email protected]>

content/hackathons/usw24/index.mdx

@@ -34,7 +34,7 @@ All hackathon in-person participants will get a Unikraft T-shirt.
 
 If you're eager to learn more about efficient cloud computing and unikernel technology, to work on practical open source tasks and to expand your knowledge of cloud-native and low-level topics, you'll want to be part of USW'24.
 You will need to complete a set of challenges that will get you accustomed to the environment you will be using during the sessions.
-You will need to submit the challenge solution on the [registration form](https://forms.gle/6AMFoCoqJqKGdBgX6) by Thursday, June 27, 2024, 8pm CET.
+You will need to submit the challenge solution on the [registration form](https://forms.gle/6AMFoCoqJqKGdBgX6) by Saturday, June 29, 2024, 10pm CEST.
 
 It's recommended you check these prerequisites before taking part in USW'24: