Why version 0.6.0 of MockV3Interface.sol in test folder inside contracts?

[ImAnshuJoshi]

Can anyone explain me , Why are we using version 0.6.0 in the above file . When I took solidity version 0.8 and v0.8 in the path , It all seemed to work fine . But taking v0.6 and solidity version was giving error though i have added that in hardhat.config.js as compilers version.

[alymurtazamemon]

@ImAnshuJoshi It is written in that version. You can find the source code on openzeppelin contracts on GitHub.