Merge pull request #1321 from helsingborg-stad/fix/cached-timestamp-test

fix: cached timestamp test

Author: NiclasNorin

library/PostObject/Date/CachedTimestampResolver.test.php

@@ -33,7 +33,7 @@ public function testResolveCachesResultFromInnerResolver()
         $postObject = $this->createMock(PostObjectInterface::class);
         $postObject->method('getId')->willReturn(1);
         $postObject->method('getBlogId')->willReturn(1);
-        $postObject->method('getPublishedTime')->willReturn("2025-02-10 12:00:00");
+        $postObject->method('getPublishedTime')->willReturn(1);
         $innerResolver = $this->createMock(TimestampResolverInterface::class);
         $innerResolver->expects($this->exactly(1))->method('resolve')->willReturn(123);