[R20-1546] update promo card content margin

[lambry]

Issue: https://digital-vic.atlassian.net/browse/R20-1546

What I did

• Update promo card content margin as per feedback: "Spacing should be consistent across all promo cards across all breakpoints. Token that should be used is rpl-sp-3 (12px) promo cards ONLY"

How to test

• See storybook

Checklist

For all PR's

• I've added relevant changes to the project Readme if needed.
• I've updated the documentation site as needed.
• I have added unit tests to cover my changes (if not applicable, please state why in a comment)

For new components only

• I have added a story covering all variants
• I have checked a11y tab in storybook passes
• Any events are emitted on the event bus

[cypress]

Passing run #1189 ↗︎

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Details:

feat(@dpc-sdp/ripple-ui-core): update promo card content margin
Project: ripple-framework	Commit: 6d135f62a4
Status: Passed	Duration: 06:28 💡
Started: Jan 29, 2024 12:38 AM	Ended: Jan 29, 2024 12:45 AM

Review all test suite changes for PR #1012 ↗︎

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