Update CI to test on 27.0-rc3 (#13507)

Author: michallepicki

.github/workflows/ci.yml

@@ -24,7 +24,7 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - otp_version: "27.0-rc2"
+          - otp_version: "27.0-rc3"
           - otp_version: "26.0"
             otp_latest: true
           - otp_version: "25.3"