Bump ruby from 3.3.5-slim to 3.3.6-slim

Bumps ruby from 3.3.5-slim to 3.3.6-slim.

---
updated-dependencies:
- dependency-name: ruby
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Dockerfile

@@ -24,7 +24,7 @@
 # 3. Remove build dependencies.
 # 4. Cleanup leftover caches & files.
 
-FROM ruby:3.3.5-slim AS builder
+FROM ruby:3.3.6-slim AS builder
 
 ARG DEBIAN_FRONTEND=noninteractive
 
@@ -39,7 +39,7 @@ RUN apt-get update && \
     echo 'gem: --no-document' >> /etc/gemrc && \
     gem install --file Gemfile
 
-FROM ruby:3.3.5-slim
+FROM ruby:3.3.6-slim
 
 ARG DEBIAN_FRONTEND=noninteractive