chore: Update Go to 1.25.0

[lantoli]

Description

Update Go to 1.25.0.

Also updated Go linter to 2.4.0.

Type of change:

• Bug fix (non-breaking change which fixes an issue). Please, add the "bug" label to the PR.
• New feature (non-breaking change which adds functionality). Please, add the "enhancement" label to the PR. A migration guide must be created or updated if the new feature will go in a major version.
• Breaking change (fix or feature that would cause existing functionality to not work as expected). Please, add the "breaking change" label to the PR. A migration guide must be created or updated.
• This change requires a documentation update
• Documentation fix/enhancement

Required Checklist:

• I have signed the MongoDB CLA
• I have read the contributing guides
• I have checked that this change does not generate any credentials and that they are NOT accidentally logged anywhere.
• I have added tests that prove my fix is effective or that my feature works per HashiCorp requirements
• I have added any necessary documentation (if appropriate)
• I have run make fmt and formatted my code
• If changes include deprecations or removals I have added appropriate changelog entries.
• If changes include removal or addition of 3rd party GitHub actions, I updated our internal document. Reach out to the APIx Integration slack channel to get access to the internal document.

Further comments

[Copilot]

Pull Request Overview

Updates Go version from 1.24.6 to 1.25.0 and upgrades the golangci-lint tool from v2.3.1 to v2.4.0 to maintain compatibility and leverage newer tooling features.

• Update Go version to 1.25.0 in go.mod
• Update golangci-lint version to v2.4.0 in both Makefile and GitHub Actions workflow

Reviewed Changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated no comments.

File	Description
go.mod	Updates Go version requirement to 1.25.0
Makefile	Updates GOLANGCI_VERSION variable to v2.4.0
.github/workflows/code-health.yml	Updates golangci-lint action version to v2.4.0

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