feat(socials): add bluesky SVG file

[gacallea]

Summary

Related issue

as discusse here: #332

Changes

added bluesky SVG file to social_icons directory

Accessibility

N/A

Screenshots

N/A

Type of change

• [ ] Bug fix (fixes an issue without altering functionality)
• [x] New feature (adds non-breaking functionality)
• [ ] Breaking change (alters existing functionality)
• [ ] UI/UX improvement (enhances user interface without altering functionality)
• [ ] Refactor (improves code quality without altering functionality)
• [ ] Documentation update
• [ ] Other (please describe below)

Checklist

• [ ] I have verified the accessibility of my changes
• [ ] I have tested all possible scenarios for this change
• [ ] I have updated theme.toml with a sane default for the feature
• [ ] I have made corresponding changes to the documentation:
  • [ ] Updated config.toml comments
  • [ ] Updated theme.toml comments
  • [ ] Updated "Mastering tabi" post in English
  • [ ] (Optional) Updated "Mastering tabi" post in Spanish
  • [ ] (Optional) Updated "Mastering tabi" post in Catalan

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[welpo]

Thank you!