Bump ruby from 3.3.1-alpine to 3.3.2-alpine (#639)

Bumps ruby from 3.3.1-alpine to 3.3.2-alpine.

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Dockerfile

@@ -1,4 +1,4 @@
-FROM ruby:3.3.1-alpine
+FROM ruby:3.3.2-alpine
 
 COPY . /root/sinatra-post-to-redis
 WORKDIR /root/sinatra-post-to-redis