Updated CI

Author: ankane

.github/workflows/build.yml

@@ -7,8 +7,8 @@ jobs:
       - uses: actions/checkout@v4
       - uses: erlef/setup-beam@v1
         with:
-          otp-version: 26
-          elixir-version: 1.17
+          otp-version: 27
+          elixir-version: 1.18
       - run: mix deps.get
       - uses: ankane/setup-postgres@v1
         with: