chore: update Go from 1.25.6 to 1.25.7 by CommanderK5 · Pull Request #22465

chore: update Go from 1.25.6 to 1.25.7 by CommanderK5 · Pull Request #22465 · coder/coder

Documentation Check

No Changes Needed

This PR is a routine Go toolchain bump (1.25.6 → 1.25.7) with an internal fix for unix socket path lengths in tests. All changes are in build/CI infrastructure files (.github/actions/setup-go/action.yaml, dogfood/coder/Dockerfile, flake.nix, go.mod) and a test utility (testutil/unixsocket.go). There are no user-facing behavior changes, new CLI flags, configuration options, or APIs that would require documentation updates.

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