DocBlock Change in Styles/Conditional (#1697)

Scrutinizer reported a minor error in a test involving a module
which I was not changing.
Styles/Conditional function setConditions can take a scalar or an
array as a parameter, but DocBlock says it only expects array.
I did not wish to add the extra module to my PR, but made a note to
self to fix that after PR was installed.
That has now happened, and it makes for a good case for me
to see all the PHP8/Composer2/etc. changes that have happened recently.

src/PhpSpreadsheet/Style/Conditional.php

@@ -189,7 +189,7 @@ public function getConditions()
     /**
      * Set Conditions.
      *
-     * @param string[] $pValue Condition
+     * @param bool|float|int|string|string[] $pValue Condition
      *
      * @return $this
      */