Use png icons in caldav reminder emails

Signed-off-by: Richard Steinmetz <richard@steinmetz.cloud>

apps/dav/lib/CalDAV/Reminder/NotificationProvider/EmailProvider.php

@@ -155,18 +155,18 @@ class EmailProvider extends AbstractProvider {
 								   string $calendarDisplayName,
 								   VEvent $vevent):void {
 		$template->addBodyListItem($calendarDisplayName, $l10n->t('Calendar:'),
-			$this->getAbsoluteImagePath('actions/info.svg'));
+			$this->getAbsoluteImagePath('actions/info.png'));
 
 		$template->addBodyListItem($this->generateDateString($l10n, $vevent), $l10n->t('Date:'),
-			$this->getAbsoluteImagePath('places/calendar.svg'));
+			$this->getAbsoluteImagePath('places/calendar.png'));
 
 		if (isset($vevent->LOCATION)) {
 			$template->addBodyListItem((string) $vevent->LOCATION, $l10n->t('Where:'),
-				$this->getAbsoluteImagePath('actions/address.svg'));
+				$this->getAbsoluteImagePath('actions/address.png'));
 		}
 		if (isset($vevent->DESCRIPTION)) {
 			$template->addBodyListItem((string) $vevent->DESCRIPTION, $l10n->t('Description:'),
-				$this->getAbsoluteImagePath('actions/more.svg'));
+				$this->getAbsoluteImagePath('actions/more.png'));
 		}
 	}
 

apps/dav/tests/unit/CalDAV/Reminder/NotificationProvider/EmailProviderTest.php

@@ -500,7 +500,7 @@ class EmailProviderTest extends AbstractNotificationProviderTest {
 			$this->urlGenerator
 				->expects($this->at(8 * $i))
 				->method('imagePath')
-				->with('core', 'actions/info.svg')
+				->with('core', 'actions/info.png')
 				->willReturn('imagePath1');
 
 			$this->urlGenerator
@@ -512,7 +512,7 @@ class EmailProviderTest extends AbstractNotificationProviderTest {
 			$this->urlGenerator
 				->expects($this->at(8 * $i + 2))
 				->method('imagePath')
-				->with('core', 'places/calendar.svg')
+				->with('core', 'places/calendar.png')
 				->willReturn('imagePath2');
 
 			$this->urlGenerator
@@ -524,7 +524,7 @@ class EmailProviderTest extends AbstractNotificationProviderTest {
 			$this->urlGenerator
 				->expects($this->at(8 * $i + 4))
 				->method('imagePath')
-				->with('core', 'actions/address.svg')
+				->with('core', 'actions/address.png')
 				->willReturn('imagePath3');
 
 			$this->urlGenerator
@@ -536,7 +536,7 @@ class EmailProviderTest extends AbstractNotificationProviderTest {
 			$this->urlGenerator
 				->expects($this->at(8 * $i + 6))
 				->method('imagePath')
-				->with('core', 'actions/more.svg')
+				->with('core', 'actions/more.png')
 				->willReturn('imagePath4');
 
 			$this->urlGenerator