Update ruby to v3.4.2

This MR contains the following updates:

Package	Type	Update	Change
registry.docker.com/library/ruby (source)		patch	3.4.1 -> 3.4.2
registry.docker.com/library/ruby (source)	final	patch	3.4.1-slim -> 3.4.2-slim
ruby (source)		patch	3.4.1 -> 3.4.2

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Configuration

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This MR has been generated by Renovate Bot.

.tool-versions

-ruby 3.3.6
+ruby 3.4.2