PHP 8.* compatibility

PHP 8.1 reports the following deprecated messages:

[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::offsetExists($offset) should either be compatible with ArrayAccess::offsetExists(mixed $offset): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 351
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of & Pods\Whatsit::offsetGet($offset) should either be compatible with ArrayAccess::offsetGet(mixed $offset): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 362
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::offsetSet($offset, $value) should either be compatible with ArrayAccess::offsetSet(mixed $offset, mixed $value): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 375
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::offsetUnset($offset) should either be compatible with ArrayAccess::offsetUnset(mixed $offset): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 389
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::jsonSerialize() should either be compatible with JsonSerializable::jsonSerialize(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 285
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::current() should either be compatible with Iterator::current(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 306
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::next() should either be compatible with Iterator::next(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 322
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::key() should either be compatible with Iterator::key(): mixed, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 315
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::valid() should either be compatible with Iterator::valid(): bool, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 329
[08-Aug-2022 00:16:49 UTC] PHP Deprecated:  Return type of Pods\Whatsit::rewind() should either be compatible with Iterator::rewind(): void, or the #[\ReturnTypeWillChange] attribute should be used to temporarily suppress the notice in .../public_html/wp-content/plugins/pods/src/Pods/Whatsit.php on line 299