fix(ci): correct commit message for NIP-62 vanish support

[phoenix-server]

Fixes commitlint violation on main branch.

The commit 'add NIP-62 vanish event support (#418)' violates commitlint rules:

• Missing conventional commit prefix (feat/fix/etc)
• Invalid message format

This PR corrects the commit message to:
'feat: add NIP-62 vanish event support (#418)'

Once merged, this will fix the CI checks on main.

[coveralls]

Coverage Report for CI Build 24221201821

Warning

No base build found for commit 78facd1 on main.
Coverage changes can't be calculated without a base build.
If a base build is processing, this comment will update automatically when it completes.

Coverage: 50.224%

Details

• Patch coverage: No coverable lines changed in this PR.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

Requires a base build to compare against. How to fix this →

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Coverage Stats

Relevant Lines:	2408
Covered Lines:	1253
Line Coverage:	52.03%
Relevant Branches:	935
Covered Branches:	426
Branch Coverage:	45.56%
Branches in Coverage %:	Yes
Coverage Strength:	10.06 hits per line

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💛 - Coveralls