`_getCurrentPythResponse` can benefit by having more validation

[GalloDaSballo]

Impact

Pyth works as follows:

• It returns an integer
• It returns an exponent by which to scale the integer for the price
• it returns the publishTime
• and a confidence interval

The reason why Pyth includes a confidence interval is due to the impossibility of chosing a single price that is the "correct" price

Mitigation

Consider implementing additional checks, you could take inspiration from Euler's multi-audited feeds: https://github.com/euler-xyz/euler-price-oracle/blob/master/src/adapter/pyth/PythOracle.sol