Merge pull request #13763 from id/20240904-ci-fix-conf-tests

ci: always set PROFILE env variable in run_conf_tests

.github/workflows/run_conf_tests.yaml

@@ -18,6 +18,8 @@ jobs:
   run_conf_tests:
     runs-on: ${{ endsWith(github.repository, '/emqx') && 'ubuntu-22.04' || fromJSON('["self-hosted","ephemeral","linux","x64"]') }}
     container: ${{ inputs.builder }}
+    env:
+      PROFILE: ${{ matrix.profile }}
     strategy:
       fail-fast: false
       matrix: