chore(deps): update ruby to v3.4.7

This MR contains the following updates:

Package	Type	Update	Change
ghcr.io/rails/devcontainer/images/ruby	image	patch	3.4.3 -> 3.4.7
registry.docker.com/library/ruby (source)		patch	3.4.3 -> 3.4.7
registry.docker.com/library/ruby (source)	image	patch	3.4.3 -> 3.4.7
registry.docker.com/library/ruby (source)	final	patch	3.4.3-slim -> 3.4.7-slim
registry.docker.com/library/ruby (source)	stage	patch	3.4.3 -> 3.4.7
ruby (source)		patch	3.4.3 -> 3.4.7

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