Update gpu-allocator dependency to 0.27 (#5982)

Author: nical

Cargo.lock

@@ -147,7 +147,7 @@ libloading = { version = ">=0.7, <0.9", optional = true }
 # backend: Dx12
 bit-set = { version = "0.6", optional = true }
 range-alloc = { version = "0.1", optional = true }
-gpu-allocator = { version = "0.26", default-features = false, features = [
+gpu-allocator = { version = "0.27", default-features = false, features = [
     "d3d12",
     "public-winapi",
 ], optional = true }