Adding fail catch to curl command (#3798)

Author: ev1yehor

.buildkite/hooks/pre-command

@@ -23,7 +23,7 @@ check_if_file_exist_in_repo() {
         branchName="master"
     fi
     local path_to_file="cd/release/release-manager/project-configs/${branchName}/${fileName}"
-    local response=$(curl -s -H "Authorization: token $GITHUB_REPO_TOKEN" https://api.github.com/repos/elastic/${repoName}/contents/${path_to_file}| grep -c "\"path\"\: \"${path_to_file}\"")
+    local response=$(curl --fail -s -H "Authorization: token $GITHUB_REPO_TOKEN" https://api.github.com/repos/elastic/${repoName}/contents/${path_to_file}| grep -c "\"path\"\: \"${path_to_file}\"")
     if [[ ${response} -ge 1 ]]; then
         export FILE_EXISTS_IN_REPO=true
         echo "FILE_EXIST_IN_REPO = true"