Merge #187: Pin hyper-rustls to v0.27.7 for MSRV

9865aab fix(ci): pin `hyper-rustls` to v0.27.7 (Luis Schwab)

Pull request description:

  ## Changelog
  ```
  - Pin `hyper-rustls` to v0.27.7 for MSRV
  ```

ACKs for top commit:
  oleonardolima:
    ACK 9865aab

Tree-SHA512: 38b0d7666685faf458f927dbbfacb86045eba4c69d6b6ac48c3488460fffc5f9bf36a8d37a733bc6767c699fd3607d7f57283eb061c9c623d8074a7fa23ca2e1

Author: oleonardolima

ci/pin-msrv.sh

@@ -9,3 +9,4 @@ cargo update -p native-tls --precise "0.2.13"
 cargo update -p idna_adapter --precise "1.2.0"
 cargo update -p zerofrom --precise "0.1.5"
 cargo update -p litemap --precise "0.7.4"
+cargo update -p hyper-rustls --precise "0.27.7"