Fix build with go mod tidy #1

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	#
	# Licensed under the Apache License, Version 2.0 (the "License");
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	name: Conformance Tests

	on:
	workflow_dispatch:
	push:
	branches:
	- main
	pull_request:
	branches:
	- main

	permissions:
	contents: read

	jobs:
	conformance:
	runs-on: ubuntu-latest
	steps:
	- uses: actions/checkout@44c2b7a8a4ea60a981eaca3cf939b5f4305c123b # v4.1.5
	- uses: actions/setup-go@cdcb36043654635271a94b9a6d1392de5bb323a7 # v5.0.1
	with:
	go-version-file: go.mod

	- run: go mod download

	- run: go build -o conformance cmd/conformance/main.go

	- uses: sigstore/sigstore-conformance@ee4de0e602873beed74cf9e49d5332529fe69bf6 # v0.0.11
	with:
	entrypoint: ${{ github.workspace }}/conformance
	skip-signing: true

	- uses: sigstore/sigstore-conformance@ee4de0e602873beed74cf9e49d5332529fe69bf6 # v0.0.11
	with:
	entrypoint: ${{ github.workspace }}/conformance
	skip-signing: true
	environment: staging

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