Bump Ruby version in scripts/ruby and .ruby-version to 3.4.7 the same as the packer-image in production (#8525)

chore: Bump Ruby version in .ruby-version

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Co-authored-by: Bruno Verachten <[email protected]>

Author: github-actions[bot]

.ruby-version

@@ -1 +1 @@
-3.4.5
+3.4.7