Ignore tools/cmake*

This will ignore tools/cmake-win32.zip and tools/cmake-win32/

Change-Id: I9018aff8acd991b2c9e7d1e9b4100c17096676ce
Reviewed-on: https://dawn-review.googlesource.com/c/dawn/+/86043
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Commit-Queue: Ben Clayton <bclayton@google.com>
diff --git a/.gitignore b/.gitignore
index 42d8414..a60082c 100644
--- a/.gitignore
+++ b/.gitignore
@@ -32,7 +32,7 @@
 /third_party/webgpu-cts
 /third_party/zlib
 /tools/clang
-/tools/cmake
+/tools/cmake*
 /tools/golang
 /tools/memory
 /out