Various updates and cleanups

[arnested]

• Add update go version action
• Don't use Yoda conditions (staticcheck)
• Use go tools for some tools
• Update copyright years
• Update Go version to 1.25.7
• Update dependencies (go get -u ./...)
• Use go version from go.mod in actions
• Add "LicenseRef-scancode-google-patent-license-golang" as allowed license