Update .github/workflows/ci.yml

Author: josevalim

.github/workflows/ci.yml

@@ -106,7 +106,7 @@ jobs:
     name: Windows Server 2019, Erlang/OTP ${{ matrix.otp_version }}
     strategy:
       matrix:
-        otp_version: ["26.2", "27.3", "28.0"]
+        otp_version: ["26.2", "27.3"]
     runs-on: windows-2022
     steps:
       - name: Configure Git