Add Elixir v1.18 to CI build matrix

Author: marcelotto

.github/workflows/elixir-build-and-test.yml

@@ -32,7 +32,11 @@ jobs:
             build-flags: --warnings-as-errors
           - pair:
               elixir: 1.17.3
-              otp: 27.0
+              otp: 27.3
+            build-flags: --warnings-as-errors
+          - pair:
+              elixir: 1.18.3
+              otp: 27.3
             build-flags: --warnings-as-errors
     steps:
       - name: Checkout repository

.github/workflows/elixir-dialyzer.yml

@@ -16,8 +16,8 @@ jobs:
       MIX_ENV: dev
     strategy:
       matrix:
-        elixir: ["1.17.2"]
-        otp: ["27.0.1"]
+        elixir: ["1.18.3"]
+        otp: ["27.3.0"]
 
     steps:
       - name: Checkout repository

.github/workflows/elixir-quality-checks.yml

@@ -14,8 +14,8 @@ jobs:
     runs-on: ubuntu-latest
     strategy:
       matrix:
-        elixir: ["1.17.2"]
-        otp: ["27.0.1"]
+        elixir: ["1.18.3"]
+        otp: ["27.3.0"]
 
     steps:
       - name: Checkout repository