Bump golang from 1.26.2 to 1.26.3 #23

	name: Sync Go Toolchain

	on:
	pull_request:
	paths:
	- "Dockerfile"

	jobs:
	sync:
	runs-on: ubuntu-latest
	permissions:
	contents: write

	steps:
	- uses: actions/checkout@v6
	with:
	ref: ${{ github.head_ref }}

	- uses: actions/setup-go@v6
	with:
	go-version-file: go.mod

	- name: Extract Go version from Dockerfile
	id: dockerfile
	run: \|
	VERSION=$(sed -n 's/^FROM golang:$[0-9.]$./\1/p' Dockerfile \| head -1)
	echo "version=$VERSION" >> $GITHUB_OUTPUT
	echo "Dockerfile Go version: $VERSION"

	- name: Extract current toolchain from go.mod
	id: gomod
	run: \|
	TOOLCHAIN=$(go mod edit -json \| jq -r '.Toolchain // empty')
	echo "toolchain=$TOOLCHAIN" >> $GITHUB_OUTPUT
	echo "Current go.mod toolchain: $TOOLCHAIN"

	- name: Update go.mod toolchain if needed
	if: steps.gomod.outputs.toolchain != format('go{0}', steps.dockerfile.outputs.version)
	env:
	NEW_VERSION: ${{ steps.dockerfile.outputs.version }}
	run: \|
	echo "Updating toolchain to go${NEW_VERSION}"
	go mod edit -toolchain="go${NEW_VERSION}"

	- name: Commit and push changes
	if: steps.gomod.outputs.toolchain != format('go{0}', steps.dockerfile.outputs.version)
	env:
	NEW_VERSION: ${{ steps.dockerfile.outputs.version }}
	run: \|
	git config user.name "github-actions[bot]"
	git config user.email "41898282+github-actions[bot]@users.noreply.github.com"
	git add go.mod
	git commit -m "Sync go.mod toolchain with Dockerfile (go${NEW_VERSION})"
	git push

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