fix: synchronize the Bazel version for the BCR presubmit (#1097)

Need to synchronize the Bazel version in `.bazelversion` with the value
in the presubmit YAML file.

Author: cgrindel

.bcr/presubmit.yml

@@ -4,7 +4,7 @@ bcr_test_module:
     platform: ["macos"]
     bazel:
       # This needs to exactly match the value used in .bazelversion at the root.
-      - 7.1.1
+      - 7.1.2
   tasks:
     run_tests:
       name: "Run test module"