silver_eth - The conf of the pyth returned price are not validated

[sherlock-admin3]

silver_eth

Medium

The conf of the pyth returned price are not validated

as explained in the following, the conf and expo values returned by the pyth oracle should be validated to ensure the protocol is not using far off prices

(https://solodit.xyz/issues/m-01-pyth-oracle-price-is-not-validated-properly-pashov-audit-group-none-nabla-markdown)
https://docs.pyth.network/price-feeds/best-practices#confidence-intervals

the pyth factory already has logic to ensure the price it returns is in 18 decimals, but it doesnt ensure conf which is necessary for the validity of the price