fix: use dl.k8s.io, not kubernetes-release bucket

This PR updates references from the legacy bucket to the new community
owned resources. I've also taken the opprotunity to bump the patch
version used from 1.26.0 to 1.26.4.

Signed-off-by: Ricky Sadowski <richard.j.sadowski@gmail.com>

Author: rjsadow

test/external-e2e/run.sh

@@ -21,7 +21,7 @@ DRIVER="test"
 
 setup_e2e_binaries() {
     # download k8s external e2e binary
-    curl -sL https://storage.googleapis.com/kubernetes-release/release/v1.26.0/kubernetes-test-linux-amd64.tar.gz --output e2e-tests.tar.gz
+    curl -sL https://dl.k8s.io/release/v1.26.4/kubernetes-test-linux-amd64.tar.gz --output e2e-tests.tar.gz
     tar -xvf e2e-tests.tar.gz && rm e2e-tests.tar.gz
 
     export EXTRA_HELM_OPTIONS="--set driver.name=$DRIVER.csi.azure.com --set controller.name=csi-$DRIVER-controller --set node.name=csi-$DRIVER-node --set driver.azureGoSDKLogLevel=INFO"