Add @sebastiaanspeck as organization owner

Resolves #12687

MAINTAINERS.md

@@ -142,8 +142,6 @@ An automated list can be found [here](https://github.com/orgs/tldr-pages/people)
  [21 June 2021](https://github.com/tldr-pages/tldr/issues/6149) — present
 - **Juri ([@gutjuri](https://github.com/gutjuri))**:
  [24 October 2023](https://github.com/tldr-pages/tldr/issues/11201) — present
-- **Sebastiaan Speck ([@sebastiaanspeck](https://github.com/sebastiaanspeck))**:
- [24 October 2023](https://github.com/tldr-pages/tldr/issues/11202) — present
 - **Isaac Vicente ([@isaacvicente](https://github.com/isaacvicente))**:
  [29 December 2023](https://github.com/tldr-pages/tldr/issues/11918) — present
 - **Vitor Henrique ([@vitorhcl](https://github.com/vitorhcl))**:
@@ -182,6 +180,8 @@ An automated list can be found [here](https://github.com/orgs/tldr-pages/people)
  [18 March 2021](https://github.com/tldr-pages/tldr/issues/5473) — [15 November 2023](https://github.com/tldr-pages/tldr/issues/11509)
 - Lena ([@acuteenvy](https://github.com/acuteenvy)):
  [21 June 2023](https://github.com/tldr-pages/tldr/issues/10406) — [27 December 2023](https://github.com/tldr-pages/tldr/issues/11839)
+- Sebastiaan Speck ([@sebastiaanspeck](https://github.com/sebastiaanspeck)):
+ [24 October 2023](https://github.com/tldr-pages/tldr/issues/11202) — [27 April 2024](https://github.com/tldr-pages/tldr/issues/12687)
 
 ## Organization owners
 
@@ -212,6 +212,8 @@ An automated list can be found [here](https://github.com/orgs/tldr-pages/people)
  [7 July 2023](https://github.com/tldr-pages/tldr/issues/10054) — present
 - **Lena ([@acuteenvy](https://github.com/acuteenvy))**:
  [27 December 2023](https://github.com/tldr-pages/tldr/issues/11839) — present
+- **Sebastiaan Speck ([@sebastiaanspeck](https://github.com/sebastiaanspeck))**:
+ [27 April 2024](https://github.com/tldr-pages/tldr/issues/12687) - present
 - Igor Shubovych ([@igorshubovych](https://github.com/igorshubovych)):
  until [18 January 2018](https://github.com/tldr-pages/tldr/issues/1878#issuecomment-358610454)
 - Ruben Vereecken ([@rubenvereecken](https://github.com/rubenvereecken)):