fix tests, use image fixture instead of tmp file #1

	name: Publish gem to RubyGems.org

	on:
	push:
	tags:
	- v*

	jobs:
	push:
	name: Push gem to RubyGems.org
	runs-on: ubuntu-latest

	permissions:
	id-token: write
	contents: write

	steps:
	- uses: actions/checkout@v4
	- name: Set up Ruby
	uses: ruby/setup-ruby@v1
	with:
	bundler-cache: true
	ruby-version: ruby

	- uses: rubygems/release-gem@v1

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