docs: add dagecko as a contributor for security

[allcontributors]

Adds @dagecko as a contributor for security.

This was requested by iluwatar in this comment

[skip ci]

[github-actions]

PR Summary

Adds @dagecko as a contributor for security. Updates the All Contributors configuration and README to reflect the new contributor.

Changes

File	Summary
.all-contributorsrc	Appended dagecko to the contributors list with login, name, avatar, profile and security contribution in the All Contributors config.
README.md	Bumped All Contributors badge count from 394 to 395 and added dagecko entry under the security contributions in the contributors table.

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autogenerated by presubmit.ai

[github-actions]

✅ LGTM!

Review Summary

Commits Considered (2)

• 05a4012: docs: update .all-contributorsrc [skip ci]
• 9abec83: docs: update README.md [skip ci]

Files Processed (2)

• .all-contributorsrc (1 hunk)
• README.md (2 hunks)

Actionable Comments (0)

Skipped Comments (3)

• .all-contributorsrc [3596-3605]

  best practice: "Add contributor entry for the new security contributor."

• README.md [9-9]

  maintainability: "Badge count should reflect actual contributors."

• README.md [588-588]

  readability: "Contributors table alignment after adding a new contributor."