chore: don't test e2e/smoke on BCR with Bazel 6

Author: gregmagolan

.bcr/presubmit.yml

@@ -1,14 +1,14 @@
 bcr_test_module:
-  module_path: 'e2e/smoke'
+  module_path: "e2e/smoke"
   matrix:
-    bazel: ['6.x', '7.x']
-    platform: ['debian10', 'macos', 'ubuntu2004', 'windows']
+    bazel: ["7.x"]
+    platform: ["debian10", "macos", "ubuntu2004", "windows"]
   tasks:
     run_tests:
-      name: 'Run test module'
+      name: "Run test module"
       bazel: ${{ bazel }}
       platform: ${{ platform }}
       test_targets:
-        - '//...'
+        - "//..."
       test_flags:
-        - '--test_tag_filters=-skip-on-bazelci-windows'
+        - "--test_tag_filters=-skip-on-bazelci-windows"