This update for icinga-php-thirdparty, icinga-php-library, icingaweb2 fixes the following issues:

Changes in icinga-php-thirdparty:

- Update to 0.13.1

  - No changelog from upstream.

- Update to 0.12.1

  - No changelog from upstream.

Changes in icinga-php-library:

- Update to 1.17.0

  - No changelog from upstream.

Changes in icingaweb2:

- Update to 2.12.6

  - Search box shows many magnifying glasses for some community themes #5395
  - Authentication hooks are not called with external backends #5415
  - Improve Minimal layout #5386

- Update to 2.12.5

  * PHP 8.4 Support
    We're again a little behind schedule, but now we support PHP 8.4!
    This means that installations on Ubuntu 25.04 and Fedora 42+ can
    now install Icinga Web without worrying about PHP related
    incompatibilities. Icinga packages will be available in the
    next few days.
  * Good Things Take Time
    There's only a single (notable) recent issue that is fixed
    with this release. All the others are a bit older.
    - External URLs set up as dashlets are not embedded the same
      as navigation items #5346
  * But the team sat together a few weeks ago and fixed a bug here
    and there. And of course, also in Icinga Web!
    - Users who are not allowed to change the theme, cannot change
      the theme mode either #5385
    - Improved compatibility with several SSO authentication
      providers #5000, #5227
    - Filtering for older-than events with relative time does not
      work #5263
    - Empty values are NULL in CSV exports #5350
  * Breaking, Somewhat
    This is mainly for developers.
    With the support of PHP 8.4, we introduced a new environment
    variable, ICINGAWEB_ENVIRONMENT. Unless set to dev, Icinga Web
    will not show nor log deprecation notices anymore.