Missing PHP extension iconv

[Calvario]

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Description

iconv is not enabled and will impact StringHelpers::inferEncoding() allowing non-utf8 librenms/librenms#16324

Expected behaviour

iconv to be enabled

Actual behaviour

iconv is not enabled

Steps to reproduce

# cat test_iconv.php
<?php
echo function_exists('iconv') ? 'iconv function exists' : 'iconv function does not exist';
?>

# php test_iconv.php
iconv function does not exist

Docker info

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Docker Compose config

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Additional info

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