Revert "Use OTP28/Elixir 1.18 in Selenium tests"

This reverts commit 77d0751.

Author: mkuratczyk

.github/workflows/test-management-ui-for-pr.yaml

@@ -18,12 +18,12 @@ jobs:
       fail-fast: false
       matrix:
         erlang_version:
-        - "28"
+        - "27.3"
         browser:
         - chrome
         include:
-        - erlang_version: "28"
-          elixir_version: 1.18
+        - erlang_version: "27.3"
+          elixir_version: 1.17
     env:
       SELENIUM_DIR: selenium
       DOCKER_NETWORK: rabbitmq_net

.github/workflows/test-management-ui.yaml

@@ -27,7 +27,7 @@ jobs:
         - chrome
         include:
         - erlang_version: "28"
-          elixir_version: 1.18
+          elixir_version: 1.18.4
     env:
       SELENIUM_DIR: selenium
       DOCKER_NETWORK: rabbitmq_net