Fix minimal PHP version (swoole#3979)

remicollet · web-flow · commit 049eeff8352f · 2021-01-06T17:03:31.000+08:00
diff --git a/package.xml b/package.xml
@@ -2026,7 +2026,7 @@
     <dependencies>
         <required>
             <php>
-                <min>7.1.0</min>
+                <min>7.2.0</min>
             </php>
             <pearinstaller>
                 <min>1.4.0</min>
