Use a constant empty tar header to avoid extra allocations #7578

	name: truffleruby-bundler

	on:
	pull_request:

	push:
	branches:
	- master

	concurrency:
	group: ci-${{ github.ref }}-${{ github.workflow }}
	cancel-in-progress: true

	permissions: # added using https://github.com/step-security/secure-workflows
	contents: read

	defaults:
	run:
	shell: bash

	jobs:
	truffleruby_bundler:
	name: Bundler (Truffleruby)
	runs-on: ubuntu-22.04

	steps:
	- uses: actions/checkout@0ad4b8fadaa221de15dcec353f45205ec38ea70b # v4.1.4
	- name: Setup ruby
	uses: ruby/setup-ruby@cacc9f1c0b3f4eb8a16a6bb0ed10897b43b9de49 # v1.176.0
	with:
	ruby-version: truffleruby-24.0.1
	bundler: none
	- name: Prepare dependencies
	run: \|
	bin/rake spec:parallel_deps
	- name: Run Test
	run: \|
	bin/parallel_rspec --tag truffleruby_only --tag truffleruby
	working-directory: ./bundler
	timeout-minutes: 20

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