ci: update de node-js version for semantic-release

.gitlab-ci.yml

@@ -32,7 +32,7 @@ test_opam_test:
 
 
 release:
-  image: node:19-buster-slim
+  image: node:20-buster-slim
   stage: release
   before_script:
     - apt-get update && apt-get install -y --no-install-recommends git-core ca-certificates