CLI-3803: update golang to resolve known security issues

[janjwerner-confluent]

Release Notes

Update GoLang version to 1.25.7

Checklist

• I have successfully built and used a custom CLI binary, without linter issues from this PR.
• I have clearly specified in the What section below whether this PR applies to Confluent Cloud, Confluent Platform, or both.
• I have verified this PR in Confluent Cloud pre-prod or production environment, if applicable.
• I have verified this PR in Confluent Platform on-premises environment, if applicable.
• I have attached manual CLI verification results or screenshots in the Test & Review section below.
• I have added appropriate CLI integration or unit tests for any new or updated commands and functionality.
• I confirm that this PR introduces no breaking changes or backward compatibility issues.
• I have indicated the potential customer impact if something goes wrong in the Blast Radius section below.
• I have put checkmarks below confirming that the feature associated with this PR is enabled in:
  • Confluent Cloud prod
  • Confluent Cloud stag
  • Confluent Platform
  • Check this box if the feature is enabled for certain organizations only

What

Blast Radius

References

Test & Review

[confluent-cla-assistant]

🎉 All Contributor License Agreements have been signed. Ready to merge.
_{Please push an empty commit if you would like to re-run the checks to verify CLA status for all contributors.}

[Copilot]

Pull request overview

This PR updates the Go language version from 1.25.5 to 1.25.7 to address known security vulnerabilities in the previous version.

Changes:

• Updated Go version specification across configuration files
• Modified version declarations in service configuration, Go module definition, and version control file

Reviewed changes

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

File	Description
service.yml	Updated lang_version from 1.25.5 to 1.25.7
go.mod	Updated go directive from 1.25.5 to 1.25.7
.go-version	Updated version file from 1.25.5 to 1.25.7

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[sonarqube-confluent]

Quality Gate passed

Issues
0 New issues
0 Fixed issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

See analysis details on SonarQube

[sgagniere]

I just checked that we have a corresponding 1.25.7 release in https://github.com/golang-fips/go/releases, so we're good to merge this.

Approved.