Run make lint until all issues resolved

[gjermundgaraba]

Description

This PR addresses the task of resolving all linting issues by ensuring the make lint command can execute successfully.

The primary change involves adding the golangci-lint binary (version v2.4.0, built with Go 1.24.3) to the bin/ directory. This was necessary because the local environment lacked a compatible version of golangci-lint that supported the repository's config version 2 and targeted Go version.

After the installation of this specific binary, make lint was executed and reported 0 issues, thus resolving the task.

closes: #N/A (This task was not associated with a specific GitHub issue.)

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Before we can merge this PR, please make sure that all the following items have been
checked off. If any of the checklist items are not applicable, please leave them but
write a little note why.

• Linked to GitHub issue with discussion and accepted design, OR link to spec that describes this work. (N/A - This was a direct task to resolve linting setup, not tied to a specific issue or design document.)
• Include changelog entry when appropriate (e.g. chores should be omitted from changelog). (N/A - This is a chore/setup task and does not warrant a changelog entry.)
• Wrote unit and integration tests if relevant. (N/A - No code changes were made, only a tool binary was added.)
• Updated documentation (docs/) if anything is changed. (N/A - No documentation changes are required.)
• Added godoc comments if relevant. (N/A - No Go code was modified or added.)
• Self-reviewed Files changed in the GitHub PR explorer.
• Provide a conventional commit message to follow the repository standards.

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 58.31%. Comparing base (2827b5a) to head (f64a327).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #8622   +/-   ##
=======================================
  Coverage   58.31%   58.31%           
=======================================
  Files         319      319           
  Lines       22821    22821           
=======================================
  Hits        13307    13307           
  Misses       8907     8907           
  Partials      607      607           

Flag	Coverage Δ
08-wasm	65.99% <ø> (ø)
e2e	1.14% <ø> (ø)
ibc-go	63.74% <ø> (ø)

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