Exclude Elixir 1.12 and OTP 25

Author: warmwaffles

.github/workflows/ci.yml

@@ -45,6 +45,9 @@ jobs:
         os: ["ubuntu-20.04"]
         elixir: ["1.14", "1.13", "1.12"]
         otp: ["25", "24", "23"]
+        exclude:
+          - elixir: "1.12"
+            otp: "25"
     steps:
       - uses: actions/checkout@v3
       - uses: erlef/setup-beam@v1