minor #16354 [Doctrine] use "executeQuery" instead of "execute" (samnela)

This PR was merged into the 5.3 branch.

Discussion
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[Doctrine] use "executeQuery" instead of "execute"

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Statement::execute() is deprecated, use Statement::executeQuery() instead .
see doctrine/dbal#4580

Commits
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c3f359e [Doctrine] use executeQuery instead of execute

Author: javiereguiluz

doctrine.rst

@@ -851,7 +851,7 @@ In addition, you can query directly with SQL if you need to::
                 ORDER BY p.price ASC
                 ';
             $stmt = $conn->prepare($sql);
-            $stmt->execute(['price' => $price]);
+            $stmt->executeQuery(['price' => $price]);
 
             // returns an array of arrays (i.e. a raw data set)
             return $stmt->fetchAllAssociative();