Revert "Add 1.8.6 to the CI matrix"
Revert "Add 1.8.6 to the CI matrix"

This reverts commit 76bc628a6761d02496294e4a8c334226eff00f27.

tinfoil/faraday_middleware,tinfoil/faraday_middleware,h4ck3rm1k3/faraday_middleware,austinrfnd/faraday_middleware,ShaneWilton/faraday_middleware,pferdefleisch/faraday_middleware,lostisland/faraday_middleware,h4ck3rm1k3/faraday_middleware,pferdefleisch/faraday_middleware,lostisland/faraday_middleware,austinrfnd/faraday_middleware,ShaneWilton/faraday_middleware