chore: remove elixir 1.12 from git pipeline

Author: Adriano Santos

.github/workflows/ci.yml

@@ -35,9 +35,7 @@ jobs:
       matrix:
         otp: [24.x, 25.x, 26.1.x]
         elixir: [1.15.x]
-        include:
-          - otp: 24.x
-            elixir: 1.12.x
+
     needs: check_format
     steps:
       - uses: actions/checkout@v3
@@ -88,9 +86,7 @@ jobs:
       matrix:
         otp: [24.x, 25.x, 26.1.x]
         elixir: [1.15.x]
-        include:
-          - otp: 24.x
-            elixir: 1.12.x
+
     steps:
       - uses: actions/checkout@v3
       - uses: erlef/setup-beam@v1