minor #1193 Update README.md (noniagriconomie)

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Update README.md

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c0dcaa8 Update README.md

Author: javiereguiluz

README.md

@@ -7,7 +7,7 @@ to develop applications following the [Symfony Best Practices][1].
 Requirements
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-  * PHP 7.2.9 or higher;
+  * PHP 7.3 or higher;
   * PDO-SQLite PHP extension enabled;
   * and the [usual Symfony application requirements][2].