build: bump test-libc max_rss to 3_500_000_000

error: memory usage peaked at 3.11GB (3105054720 bytes), exceeding the declared upper bound of 2.90GB (2900000000 bytes)

build.zig

@@ -681,7 +681,7 @@ pub fn build(b: *std.Build) !void {
         .test_filters = test_filters,
         .test_target_filters = test_target_filters,
         .skip_wasm = skip_wasm,
-        .max_rss = 2_496_066_355,
+        .max_rss = 3_500_000_000,
     })) |test_libc_step| test_step.dependOn(test_libc_step);
 }