Update Ruby version to 3.4.4, which is default version of OpenAI's Codex:

yasulab · yasulab · commit 840e38a7e5ae · 2025-05-22T17:56:28.000+09:00
cf. https://x.com/yasulab/status/1925193453174206828
diff --git a/Dockerfile b/Dockerfile
@@ -1,4 +1,4 @@
-FROM ruby:3.4.3
+FROM ruby:3.4.4
 
 WORKDIR /src
 ENTRYPOINT bundle install && bundle exec jekyll serve \

Original file line number	Diff line number	Diff line change
`@@ -1,4 +1,4 @@`
`1`		`-FROM ruby:3.4.3`
	`1`	`+FROM ruby:3.4.4`
`2`	`2`
`3`	`3`	`WORKDIR /src`
`4`	`4`	`ENTRYPOINT bundle install && bundle exec jekyll serve \`