Add more JSON.Path seucurity considerations in PE

[Kristina Yasuda]

Feedback received from Nikos.

I am concerned about what can be used as a "filter". For instance this example uses a regular expression for the filter pattern. Regular expressions are notorius for enabling DoS attacks (https://www.usenix.org/system/files/sec21-li-yeting.pdf)  But it can get even worse. Speficiation says that the filer can be a "JSON Schema descriptor" I bet that supporting JSON schema as a filter option will create many security risks.

‌

[Nat Sakimura]

Valid concern. Had a discussion on March 6/7 call. Will put a summary later.

[Kristina Yasuda]

PR #493

[Kristina Yasuda]

PR merged. might have to keep iterating