Don't catch OutOfMemoryError

Gson currently catches `OutOfMemoryError`s at two places and wraps them inside `JsonParseException`:
https://github.com/google/gson/blob/c5a3f21fbad3828deba1deb88168e1f76829f807/gson/src/main/java/com/google/gson/JsonParser.java#L88-L89
https://github.com/google/gson/blob/b75e1bbc7915f409ba0254fcc92c71ed6798e69b/gson/src/main/java/com/google/gson/JsonStreamParser.java#L90-L91

This is bad practice because Gson is not necessarily the cause for this error and wrapping it inside an `Exception` subclass prevents the caller from noticing the `OutOfMemoryError` until later.

Edit: Catching `OutOfMemoryError` _might_ be desired to protect about malicious JSON data, see also https://github.com/google/gson/pull/1912#issuecomment-1130767871. However, it appears `OutOfMemoryError` is not caught consistently everywhere.