Increase the size of bazel_lockfile_test to large.

This test is timing out: https://buildkite.com/bazel/bazel-bazel/builds/29847#0192c057-6380-4020-8194-b629b8e101a1

PiperOrigin-RevId: 689848805
Change-Id: I47b7e22f1eb3f4beb597b0860efa78e39cf5553c

src/test/py/bazel/BUILD

diff --git a/src/test/py/bazel/BUILD b/src/test/py/bazel/BUILD
index 154e4c9..7eac746 100644
--- a/src/test/py/bazel/BUILD
+++ b/src/test/py/bazel/BUILD
@@ -295,7 +295,7 @@
 
 py_test(
     name = "bazel_lockfile_test",
-    size = "medium",
+    size = "large",
     srcs = ["bzlmod/bazel_lockfile_test.py"],
     shard_count = 5,
     tags = [