[CI] Fix sync k8s step

Author: pazone

deploy/kubernetes/Makefile

@@ -65,7 +65,7 @@ ifeq ($(HASDIFF),1)
 	echo "INFO: Create branch to update k8s templates"	
 	git config user.name "${GITHUB_USERNAME_SECRET}"
 	git config user.email "${GITHUB_EMAIL_SECRET}"
-	git config remote.origin.url "https://${GITHUB_USERNAME_SECRET}:${GITHUB_EMAIL_SECRET}@github.com/elastic/kibana.git"
+	git config remote.origin.url "https://${GITHUB_USERNAME_SECRET}:${GITHUB_TOKEN_SECRET}@github.com/elastic/kibana.git"
 	git checkout -b $(ELASTIC_AGENT_BRANCH)
 	echo "INFO: add files if any"
 	git add $(ELASTIC_AGENT_REPO_PATH)$(FILE_REPO)