2023_Penske_EarlyContact has non-existent Related_To entries

[stschiff]

@Mattists kindly notified me of the following entities in package 2023_Penske_EarlyContact that refer to non-existent IDs in their Related_To fields:

• YUN003 refers to identical YUN049, which is non-existent
• YUN006 refers to identical YUN031, which is non-existent
• PIE010 refers to 2nd-degree relative PIE009, which is non-existent
• PIE06061 refers to identical PIE061, which is non-existent. I suppose this is a merged sample, so perhaps we should just move the entry to the Alternative_IDs column?
• PIE071631 refers to identical PIE016, PIE031, which are both non-existent. I suppose this is again a merge, so I suggest to again move the two IDs to the Alternative_IDs field.

Sandra Penske and @AyGhal can you advise here, please? I am happy to make a PR for this