Match CI OTP to dev machine

Author: kipcole9

.github/workflows/ci.yml

@@ -37,7 +37,7 @@ jobs:
           #   elixir: "1.17.2-otp-27"
           # - otp: "27.2"
           #   elixir: "1.18.4-otp-27"
-          - otp: "28.0.4"
+          - otp: "27.2.4"
             elixir: "1.18.4-otp-27"
             lint: true
     steps: