2023.5.18 cos-customizer release

Added flag `--gpu-type` to `finish-image-build` and
marked the same flag in `install-gpu` deprecated.

BUG=b/229285915
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I1f87289b61fe7e68f754a672de5d663748bd2338
Reviewed-on: https://cos-review.googlesource.com/c/cos/tools/+/49549
Tested-by: He Gao <hegao@google.com>
Reviewed-by: Arnav Kansal <rnv@google.com>
Cloud-Build: GCB Service account <228075978874@cloudbuild.gserviceaccount.com>
diff --git a/release/release-versions.yaml b/release/release-versions.yaml
index 3b4e8f4..9278f3c 100644
--- a/release/release-versions.yaml
+++ b/release/release-versions.yaml
@@ -1,9 +1,9 @@
 - staging_container_name: "cos-customizer"
   release_container_name: "cos-customizer"
-  build_commit: "7c2288211729e3d67a71dc54bc8de219d8ce6fb4"
+  build_commit: "55427c466346bb816b38a269b48e0651ce9cbdd4"
   release_tags:
     - "latest"
-    - "v20230511"
+    - "v20230518"
 - staging_container_name: "toolbox"
   release_container_name: "toolbox"
   build_commit: "ad3d535f2b6fe0708341d92524b6625e10192edf"