Do not run CI jobs when changing dev PHPUnit file

This file is never used in the CI.

Author: greg0ire

.github/workflows/continuous-integration.yml

@@ -9,7 +9,6 @@ on:
       - ci/**
       - composer.*
       - src/**
-      - phpunit.xml.dist
       - tests/**
   push:
     branches:
@@ -19,7 +18,6 @@ on:
       - ci/**
       - composer.*
       - src/**
-      - phpunit.xml.dist
       - tests/**
 
 env: