[CI] Updates GitHub Action name

Author: picandocodigo

.github/workflows/main.yml renamed to .github/workflows/8.9.yml

@@ -7,7 +7,7 @@ on:
     branches:
       - 8.9
 jobs:
-  test-main:
+  tests:
     env:
       TEST_ES_SERVER: http://localhost:9250
       PORT: 9250