Use OTP 24

There are no earlier OTP versions available for Ubuntu 24.04

Author: adriankumpf

.github/workflows/elixir.yml

@@ -24,7 +24,7 @@ jobs:
             lint: lint
           - pair:
               elixir: "1.11.4"
-              otp: "22.3"
+              otp: "24.3.4"
     steps:
       - uses: actions/checkout@v4