lang/pear: update to 1.10.12

Update pear to 1.0.12 and also contains XML_Util to 1.4.5.

PEAR 1.0.12 (2020-04-19 14:21 UTC)

Changelog:

* adjust dependencies based on new releases

PEAR 1.0.11 (2020-04-10 15:48 UTC)

Changelog:

* PR #102: Fix logging error for urls not in cache
* PR #103: Fix undefined constant name
* PR #105: Sort list of packages
* PR #106: Update REST.php
* PR #107: Update .travis.yml to include PHP 7.4
* PR #108: Remove unneeded code

XML_Util 1.4.5 (2020-04-19 11:10 UTC)

Changelog:

* PR #12: fix Trying to access array offset on value of type int

(taca)