chore: improve platform-socket.io types

[orgads]

PR Checklist

Please check if your PR fulfills the following requirements:

• The commit message follows our guidelines: https://github.com/nestjs/nest/blob/master/CONTRIBUTING.md
• Tests for the changes have been added (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)

PR Type

What kind of change does this PR introduce?

• Bugfix
• Feature
• Code style update (formatting, local variables)
• Refactoring (no functional changes, no api changes)
• Build related changes
• CI related changes
• Other... Please describe:

What is the current behavior?

Excessive use of any.

What is the new behavior?

Use explicit types.

Does this PR introduce a breaking change?

• Yes
• No

[coveralls]

Coverage Report for CI Build 167

Coverage remained the same at 89.903%

Details

• Coverage remained the same as the base build.
• Patch coverage: No coverable lines changed in this PR.
• No coverage regressions found.

Uncovered Changes

No uncovered changes found.

Coverage Regressions

No coverage regressions found.

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Coverage Stats

Relevant Lines:	8567
Covered Lines:	7702
Line Coverage:	89.9%
Relevant Branches:	2925
Covered Branches:	2372
Branch Coverage:	81.09%
Branches in Coverage %:	No
Coverage Strength:	56.5 hits per line

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💛 - Coveralls