toolbox: update docker-credentials-gcr to 2.1.10

BUG=b/287730700
TEST=presubmit
RELEASE_NOTE=None

Change-Id: I6764784bee5f517f9e2d2bbbabd0050a6f24e000
Reviewed-on: https://cos-review.googlesource.com/c/cos/tools/+/51917
Cloud-Build: GCB Service account <228075978874@cloudbuild.gserviceaccount.com>
Reviewed-by: Arnav Kansal <rnv@google.com>
Tested-by: Oleksandr Tymoshenko <ovt@google.com>
diff --git a/src/cmd/toolbox/Dockerfile b/src/cmd/toolbox/Dockerfile
index 4ce7a6b..b57deb5 100644
--- a/src/cmd/toolbox/Dockerfile
+++ b/src/cmd/toolbox/Dockerfile
@@ -9,8 +9,8 @@
 
 ARG TARGETARCH
 
-RUN cd $(mktemp -d) && curl -L -O "https://github.com/GoogleCloudPlatform/docker-credential-gcr/releases/download/v2.1.5/docker-credential-gcr_linux_$TARGETARCH-2.1.5.tar.gz" && \
-    tar xvf "docker-credential-gcr_linux_$TARGETARCH-2.1.5.tar.gz" && \
+RUN cd $(mktemp -d) && curl -L -O "https://github.com/GoogleCloudPlatform/docker-credential-gcr/releases/download/v2.1.10/docker-credential-gcr_linux_$TARGETARCH-2.1.10.tar.gz" && \
+    tar xvf "docker-credential-gcr_linux_$TARGETARCH-2.1.10.tar.gz" && \
     mv docker-credential-gcr /usr/bin/ && rm -r $(pwd)
 
 # Install the Google Cloud SDK.