Bump the test size of //src/test/java/com/google/devtools/build/lib/vfs:VfsTests

Hopefully this will help the flakiness of this test

RELNOTES: None
PiperOrigin-RevId: 302897437
diff --git a/src/test/java/com/google/devtools/build/lib/vfs/BUILD b/src/test/java/com/google/devtools/build/lib/vfs/BUILD
index 2330656..7a397be 100644
--- a/src/test/java/com/google/devtools/build/lib/vfs/BUILD
+++ b/src/test/java/com/google/devtools/build/lib/vfs/BUILD
@@ -78,7 +78,7 @@
 
 java_test(
     name = "VfsTests",
-    size = "medium",
+    size = "large",
     tags = ["no_windows"],
     test_class = "com.google.devtools.build.lib.AllTests",
     runtime_deps = [