CFV: New Valhalla Committer: Stefan Karlsson

[David Simms]

|I hereby nominate Stefan Karlsson to Valhalla Committer. Stefan is a 
long time member of the OpenJDK project, with over 700 commits ||in jdk master ||[1]. Votes are due by December 24th, 2025, 1200z. Only current Valhalla 
Committers [2] are eligible to vote on this nomination. Votes must be 
cast in the open by replying to this mailing list. For Lazy Consensus 
voting instructions, see [3]. David Simms [1] 
https://github.com/search?q=committer-name%3A%22Stefan+Karlsson%22+repo%3Aopenjdk%2Fjdk+&type=commits 
[2] https://openjdk.org/census [3] 
https://openjdk.org/projects/#committer-vote|