Update OTP versions in CI test matrix

Erlang/OTP versions older than 25 are not supported anymore. Erlang/OTP
27.3 is also available.

Author: crbelaus

.github/workflows/main.yml

@@ -15,13 +15,13 @@ jobs:
         os: [ubuntu-latest, windows-latest]
         versions:
           - elixir: 1.15.0
-            erlang: 24.0
+            erlang: 25.3
           - elixir: 1.16.0
-            erlang: 24.0
+            erlang: 25.3
           - elixir: 1.17.0
-            erlang: 27.1
+            erlang: 27.3
           - elixir: 1.18.0
-            erlang: 27.2
+            erlang: 27.3
     name: Elixir v${{ matrix.versions.elixir }}, Erlang v${{ matrix.versions.erlang }} on ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4