refactor: replace interface{} with any for clarity and modernization

[weifangc]

This change replaces occurrences of interface{} with the predeclared identifier any, introduced in Go 1.18 as an alias for interface{}.

As noted in the Go 1.18 Release Notes:
This improves readability and aligns the codebase with modern Go conventions.

[greptile-apps]

Greptile Summary

• Replaces all occurrences of interface{} with the any predeclared identifier across ~28 files to modernize the codebase and align with Go 1.18+ conventions

Important Files Changed

This PR contains only low-risk modernization changes with no files requiring special attention. All changes replace interface{} with any which are functionally identical.

Confidence score: 5/5

• This PR is extremely safe to merge with zero risk of breaking functionality or introducing bugs
• Score reflects that any is literally an alias for interface{} with identical runtime behavior, making this a purely cosmetic modernization with no functional changes
• No files require special attention as all changes are syntactic improvements with zero behavioral impact

Sequence Diagram

sequenceDiagram
    participant User
    participant API
    participant Bind
    participant Committee
    participant Queue
    participant Runner
    participant BeaconNode

    User->>API: "HTTP Request"
    API->>Bind: "Bind(request, dest)"
    Bind->>Bind: "Parse form data"
    Bind->>API: "Bound struct"
    
    API->>Committee: "EnqueueMessage(msg)"
    Committee->>Queue: "TryPush(message)"
    Queue->>Committee: "Message queued"
    
    Committee->>Committee: "ConsumeQueue()"
    Committee->>Queue: "Pop(message)"
    Queue->>Committee: "Prioritized message"
    
    Committee->>Runner: "ProcessMessage(msg)"
    Runner->>Runner: "Process consensus/partial signature"
    Runner->>BeaconNode: "Submit to beacon chain"
    BeaconNode->>Runner: "Submission result"
    
    Runner->>Committee: "Processing complete"
    Committee->>API: "Response"
    API->>User: "HTTP Response"

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[greptile-apps]

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[nkryuchkov]

Thank you for the contribution

[weifangc]

@nkryuchkov My pleasure. If there's anything need I to do, please feel free to let me know.

[iurii-ssv]

Nice!