deps: bump Go to 1.26.4 across go.mod, Dockerfiles, GH Actions

Workspace-wide sync. luxfi/node already shipped on 1.26.4 in v1.30.6
(commit 121aca1fa9); this is the cross-repo catch-up.

.github/workflows/release-binaries.yml

@@ -54,7 +54,7 @@ jobs:
       - uses: actions/checkout@v4
       - uses: actions/setup-go@v5
         with:
-          go-version: '1.26'
+          go-version: '1.26.4'
       # linux/arm64 cross toolchain (gcc-aarch64-linux-gnu) is baked into
       # ghcr.io/hanzoai/runner:0.1.1, which is the image hanzo-build-linux-amd64
       # ARC pool runs. No inline install needed.

.github/workflows/tests.yml

@@ -26,7 +26,7 @@ jobs:
         shell: bash
       - uses: actions/setup-go@v6
         with:
-          go-version: "1.26.1"
+          go-version: "1.26.4"
       - name: Run shellcheck
         shell: bash
         run: scripts/shellcheck.sh
@@ -60,7 +60,7 @@ jobs:
       - uses: actions/checkout@v5
       - uses: actions/setup-go@v6
         with:
-          go-version: "1.26.1"
+          go-version: "1.26.4"
       - name: Set timeout on Windows # Windows UT run slower and need a longer timeout
         shell: bash
         if: matrix.os == 'windows-latest'

Dockerfile

@@ -5,7 +5,7 @@
 ARG LUXD_NODE_IMAGE="invalid-image"
 
 # ============= Compilation Stage ================
-FROM --platform=$BUILDPLATFORM golang:1.26-bookworm AS builder
+FROM --platform=$BUILDPLATFORM golang:1.26.4-bookworm AS builder
 
 WORKDIR /build