Test with Bazel 8 for rules_java BCR releases

PiperOrigin-RevId: 735818870
Change-Id: I23cd3c94af8e0e6fcbf5500f128a06df6ba53ca1

.bcr/presubmit.yml

diff --git a/.bcr/presubmit.yml b/.bcr/presubmit.yml
index a994334..c81cf08 100644
--- a/.bcr/presubmit.yml
+++ b/.bcr/presubmit.yml
@@ -7,9 +7,10 @@
   - windows
   bazel:
   - 7.x
+  - 8.x
 tasks:
   verify_build_targets:
-    name: "Verify build targets"
+    name: "Verify build targets w/ Bazel {bazel}"
     platform: ${{ platform }}
     bazel: ${{ bazel }}
     build_targets: