Components: Update the Jetpack Social icon

[pablinos]

Changes proposed in this Pull Request:

Now we have the final design for the icon, this PR updates the SVG to
the optimised verison.

Jetpack product discussion

p1HpG7-g1B-p2

Does this pull request change what data or activity we track or use?

No

Testing instructions:

• Run storybook cd projects/js-packages/storybook && pnpm run storybook:dev
• Head to Components -> Icons and check that the Social icon looks ok.

[matticbot]

Caution: This PR has changes that must be merged to WordPress.com
Hello pablinos! These changes need to be synced to WordPress.com - If you 're an a11n, please commandeer and confirm D81445-code works as expected before merging this PR. Once this PR is merged, please commit the changes to WP.com. Thank you!
This revision will be updated with each commit to this PR

[github-actions]

Thank you for your PR!

When contributing to Jetpack, we have a few suggestions that can help us test and review your patch:

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[danielpost]

Same thought here (looks a little big) but works well!

[github-actions]

Great news! One last step: head over to your WordPress.com diff, D81445-code, and deploy it.
Once you've done so, come back to this PR and add a comment with your changeset ID.

Thank you!

[pablinos]

r246400-wpcom