fix: use UTC_TIMESTAMP() to get current utc date instead of NOW() in sql queries

app/Controllers/EpisodeController.php

app/Controllers/MapController.php

app/Controllers/PodcastController.php

app/Database/Migrations/2020-06-05-190000_add_platforms.php

...atabase/Migrations/2020-12-25-150000_add_credits_view.php

app/Database/Seeds/FakePodcastsAnalyticsSeeder.php

app/Database/Seeds/FakeWebsiteAnalyticsSeeder.php

app/Models/EpisodeCommentModel.php

app/Models/EpisodeModel.php

app/Models/PodcastModel.php

app/Models/PostModel.php

modules/Admin/Controllers/EpisodeController.php

...ns/2017-12-01-210000_add_analytics_podcasts_procedure.php

...ons/2017-12-01-210000_add_analytics_website_procedure.php

modules/Fediverse/Controllers/ActorController.php

modules/Fediverse/Controllers/PostController.php

modules/Fediverse/Models/ActivityModel.php

modules/Fediverse/Models/ActorModel.php

modules/Fediverse/Models/PostModel.php

modules/WebSub/Controllers/WebSubController.php