Log Message:
libpeas: update to 1.26.0.

Overview of Changes in libpeas 1.26.0
=====================================

* Simplified i18n usage
* Build system fixes
* Translation updates:
  - British English
  - Malay
  - Slovak

Overview of Changes in libpeas 1.25.3
=====================================

* Fix access to peas_gettext()
* Fix duplicate rename-to annotations
* Tighten symbol availability for GLib symbols
* Fix various tests to work with G_DISABLE_ASSERT
* Fix building with luajit
* Add peas_extension_set_new_with_properties() to aid in using libpeas
  from language bindings
* Fix naming of Python2 loader
* Remove use of undocumented -export-dynamic
* Fis use of PeasExtension with GInitiallyUnowned
* Build fixes for macOS
* Fixes to pkg-config files
* Translation updates:
  - Chinese (Taiwan)
  - Danish
  - Dutch
  - Galicians
  - Persian