Upgrade devcontainer from Ruby 3.4.4 to 3.4.5

- https://www.ruby-lang.org/en/news/2025/07/15/ruby-3-4-5-released/
- https://github.com/ruby/ruby/releases/tag/v3_4_5

Author: larouxn

.devcontainer/Dockerfile

@@ -1,7 +1,7 @@
 # See here for image contents: https://github.com/microsoft/vscode-dev-containers/tree/v0.191.1/containers/ruby/.devcontainer/base.Dockerfile
 
 # [Choice] Ruby version: 3.4, 3.3, 3.2
-ARG VARIANT="3.4.4"
+ARG VARIANT="3.4.5"
 FROM ghcr.io/rails/devcontainer/images/ruby:${VARIANT}
 
 RUN sudo apt-get update && export DEBIAN_FRONTEND=noninteractive \