Test against Elixir 1.18 and Erlang/OTP 27

Author: sgerrand

.github/workflows/ci.yml

@@ -86,6 +86,11 @@ jobs:
             gcc: gcc-11
             gpp: g++-11
           - elixir: 1.17.x
+            otp: 27
+            os: ubuntu-24.04
+            gcc: gcc-13
+            gpp: g++-13
+          - elixir: 1.18.x
             otp: 27
             os: ubuntu-latest
             gcc: gcc-13
@@ -130,8 +135,8 @@ jobs:
       - uses: actions/checkout@v2
       - uses: erlef/setup-beam@v1
         with:
+          elixir-version: 1.18.x
           otp-version: 27
-          elixir-version: 1.17.x
       - name: Install Dependencies
         run: |
           mix local.hex --force