title: laravel new blog not work mockery/mockery 1.4.0
body: <p>Today I wanted to create a new project with Laravel with this command</p>
  
  <pre><code>laravel new blog
  </code></pre>
  
  <p>But I get this error</p>
  
  <pre><code>Crafting application...
  Loading composer repositories with package information
  Installing dependencies (including require-dev) from lock file
  Your requirements could not be resolved to an installable set of packages.
  
    Problem 1
      - Installation request for mockery/mockery 1.4.0 -&gt; satisfiable by mockery/mockery[1.4.0].
      - mockery/mockery 1.4.0 requires php ^7.3.0 -&gt; your PHP version (7.2.23) does not satisfy that requirement.
  </code></pre>
  
  <p>Why should php7.3 be read when Laravel himself says at least php7.2.5 ???</p>