[BUGFIX] Fix exception in IpAnonymizationTask after upgrade from TYPO3 8

This patch adds a cast to the property `$mask` before handing it over to
`IpAnonymizationUtility::anonymizeIp()` as this method requires `$mask`
to be an `int`. This is necessary as when the task was created and saved
in TYPO3 8 it was serialized as `string`.

Resolves: #89646
Releases: master, 9.5
Change-Id: Ie0745028882991204bfa5c25ec1a4bbb7955b7c2
Reviewed-on: https://review.typo3.org/c/Packages/TYPO3.CMS/+/62300


Reviewed-by: Oliver Bartsch <bo@cedev.de>
Reviewed-by: Daniel Gorges <daniel.gorges@b13.com>
Reviewed-by: Benni Mack <benni@typo3.org>
Tested-by: TYPO3com <noreply@typo3.com>
Tested-by: Daniel Gorges <daniel.gorges@b13.com>
Tested-by: Benni Mack <benni@typo3.org>

typo3/sysext/scheduler/Classes/Task/IpAnonymizationTask.php

@@ -118,7 +118,7 @@ class IpAnonymizationTask extends AbstractTask
                 $connection->update(
                     $table,
                     [
-                        $configuration['ipField'] => IpAnonymizationUtility::anonymizeIp($ip, $this->mask)
+                        $configuration['ipField'] => IpAnonymizationUtility::anonymizeIp($ip, (int)$this->mask)
                     ],
                     [
                         'uid' => $row['uid']