Update GSOC links on main page

index.md

@@ -20,19 +20,19 @@ systems such as Windows in the near future.
 ## Important links
 
 * Source code: <https://gitlab.freedesktop.org/monado/monado>
-* GSoC 2022: [Proposal guide](https://monado.freedesktop.org/gsoc-proposal-guide.html)
-  and [project ideas](https://monado.freedesktop.org/gsoc-2022.html).
+* GSoC 2023: [Proposal guide](https://monado.freedesktop.org/gsoc-proposal-guide.html)
+  and [project ideas](https://monado.freedesktop.org/gsoc-2023.html).
 * Discord server: <https://discord.gg/8RkJgRJ>
 * IRC channel: [#monado](https://webchat.oftc.net/?channels=monado) on
   [OFTC](https://oftc.net/)
 
-## Google Summer of Code 2022
+## Google Summer of Code 2023
 
 We are happy to announce that Monado has been selected for
-[Google Summer of Code 2022](https://summerofcode.withgoogle.com/).
+[Google Summer of Code 2023](https://summerofcode.withgoogle.com/).
 A list of ideas for potential projects and additional information are available
 on the Monado [proposal guide](https://monado.freedesktop.org/gsoc-proposal-guide.html)
-and [project ideas](https://monado.freedesktop.org/gsoc-2022.html) page.
+and [project ideas](https://monado.freedesktop.org/gsoc-2023.html) page.
 
 ## Highlights