Summary:
This PR adds github actions to validate the pods, so that the changes which breaks the validation is not made. This PR also downgrades the version update of OpenSSL, as it doesn't validate the Folly podspec. I have [raised](https://github.com/krzyzanowskim/OpenSSL/issues/113) an issue on the repository which manages the openssl dependency.
## Changelog
- Added githubaction for dependent pod validation
- Downgraded the openssl version, as with upgraded version the folly pod didn't validate.
Pull Request resolved: https://github.com/facebook/flipper/pull/1834
Test Plan: CI
Reviewed By: passy
Differential Revision: D25939525
Pulled By: priteshrnandgaonkar
fbshipit-source-id: f70d043f1f6b2c79028212d8f56c6b8632092e33
140ff8861e