Fix for the occasional minified JSON from GitHub release API

hack/install_kustomize.sh

@@ -79,9 +79,11 @@ function find_release_url() {
   local arch=$3
 
   echo "${releases}" |\
-    grep "browser_download.*${opsys}_${arch}" |\
-    cut -d '"' -f 4 |\
-    sort -V | tail -n 1
+    grep -oE '"browser_download_url"[[:space:]]*:[[:space:]]*"[^"]*"' |\
+    cut -d '"' -f4 |\
+    grep "${opsys}_${arch}" |\
+    sort -V |\
+    tail -n 1
 }
 
 where="$(readlink_f "$where")/"