Update `rules_java` BCR metadata

Matches inline updates made in https://github.com/bazelbuild/bazel-central-registry/pull/1453

PiperOrigin-RevId: 606227159
Change-Id: Idf080422f4b9f9d410ed556546625f7ec8a47583

.bcr/metadata.template.json

diff --git a/.bcr/metadata.template.json b/.bcr/metadata.template.json
index 41ba4c2..9d09144 100644
--- a/.bcr/metadata.template.json
+++ b/.bcr/metadata.template.json
@@ -1,6 +1,12 @@
 {
   "homepage": "https://github.com/bazelbuild/rules_java",
-  "maintainers": [],
+  "maintainers": [
+    {
+      "email": "hvd@google.com",
+      "github": "hvadehra",
+      "name": "Hemanshu Vadehra"
+    }
+  ],
   "versions": [],
   "yanked_versions": {},
   "repository": [

.bcr/presubmit.yml

diff --git a/.bcr/presubmit.yml b/.bcr/presubmit.yml
index 52f713e..a994334 100644
--- a/.bcr/presubmit.yml
+++ b/.bcr/presubmit.yml
@@ -1,8 +1,16 @@
 matrix:
-  platform: ["centos7", "debian10", "macos", "ubuntu2004", "windows"]
+  platform:
+  - centos7
+  - debian10
+  - macos
+  - ubuntu2004
+  - windows
+  bazel:
+  - 7.x
 tasks:
   verify_build_targets:
     name: "Verify build targets"
     platform: ${{ platform }}
+    bazel: ${{ bazel }}
     build_targets:
-      - "@rules_java//java/..."
+    - "@rules_java//java/..."