fix: upgrade go to 1.26.2 to address govulncheck issues

[kristina-solovyova]

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[github-actions]

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[kristina-solovyova]

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• fix: upgrade go to 1.26.2 to address govulncheck issues #2473 👈 (View in Graphite)
• fix: remove deadcode #2471
• fix: address linting alerts #2393
• main

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[claude]

Claude finished @kristina-solovyova's task in 35s —— View job

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Summary: Clean, consistent Go version bump from 1.26.1 → 1.26.2 to address govulncheck security issues.

All 6 files updated consistently:

File	Change
go.mod	go 1.26.1 → go 1.26.2
Dockerfile	base image updated
image.Dockerfile	base image updated
.tool-versions	asdf version updated
.dagger/src/containers/builders.py	default version param updated
.github/workflows/package.yaml	setup-go version updated

No remaining references to 1.26.1 in the codebase. Changes are minimal and low-risk. LGTM.

[graphite-app]

Graphite Automations

"Add anton/matt/sergey/kristina as reviwers on operator PRs" took an action on this PR • (04/20/26)

2 reviewers were added to this PR based on Anton Bykov's automation.

[graphite-app]

Merge activity

• Apr 20, 11:11 AM UTC: kristina-solovyova added this pull request to the Graphite merge queue.
• Apr 20, 11:11 AM UTC: CI is running for this pull request on a draft pull request (#2474) due to your merge queue CI optimization settings.
• Apr 20, 11:46 AM UTC: Merged by the Graphite merge queue via draft PR: #2474.