Fix another CI warning

Author: BrianSipos

.github/workflows/build-test.yaml

@@ -25,7 +25,7 @@ jobs:
       AUTHNZ_HTTPS_PORT: 8443
     steps:
       - name: Start Container Service
-        if: ${{matrix.ctrmgr}} == 'podman'
+        if: ${{matrix.ctrmgr == 'podman'}}
         run: |
           systemctl --user start podman.socket
           systemctl --user enable podman.socket