test: fix re_printf format string for multithread test #5738

	name: ABI Checks

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

	jobs:
	abicheck:
	runs-on: ubuntu-latest

	steps:
	- uses: actions/checkout@v4
	with:
	ref: 'v3.11.0'
	path: old

	- uses: actions/checkout@v4
	with:
	path: current

	- name: fix flaky azure mirrors
	if: ${{ runner.os == 'Linux' }}
	run: \|
	sudo sed -i 's/azure\./de\./' /etc/apt/sources.list

	- name: install abidiff
	run: sudo apt-get update && sudo apt-get install -y abigail-tools

	- name: make shared lib
	run: \|
	cmake -S old -B old/build && cmake --build old/build

	- name: make current shared lib
	run: \|
	cmake -S current -B current/build && cmake --build current/build

	- name: abidiff compare
	id: abidiff
	run: abidiff old/build/libre.so current/build/libre.so
	continue-on-error: true

	- name: display warning
	if: steps.abidiff.outcome != 'success'
	run: echo "::warning::ABI Check failed - bump ABI version"

Provide feedback