add void to setUp and tearDown to PHP test code

replace.sh

#!/bin/bash
#
# a tool to apply return type declarations to "setUp" and "tearDown" for PHPUnit7

# list target files by using GNU grep
grep --files-with-matches  -i -w -e  setup  -e teardown -r tests > /tmp/files

# do substitution
cat /tmp/files | xargs perl -pi -e 's/setUp\(\)$/setUp(): void/g'
cat /tmp/files | xargs perl -pi -e 's/tearDown\(\)$/tearDown(): void/g'
cat /tmp/files | xargs perl -pi -e 's/public function runBare() *$/public function runBare(): void/g'