chore(tokens): update design-tokens dependency to 1.2.3 (#30327)

Issue number: internal

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## What is the current behavior?
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## What is the new behavior?
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- Update tokens dependency to 1.2.3.
- This version fixes the generation of the z-index tokens.

## Does this introduce a breaking change?

- [ ] Yes
- [x] No

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## Other information

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