make sync protect optional (#299)

Co-authored-by: strausr <git config --global user.email>

Author: strausr

package.json

@@ -21,7 +21,8 @@
     "copybuilds": "tools/scripts/copybuilds.sh",
     "init-git-hooks": "git config core.hooksPath .githooks && chmod 755 .githooks/pre-commit",
     "snyk-protect": "snyk protect",
-    "prepublishOnly": "jasmine test/spec/env/pkgs-spec.js && npm run snyk-protect"
+    "snyk-protect:optional": "snyk protect || echo 'Warning: snyk-protect failed (this is OK in CI environments with older glibc)'",
+    "prepublishOnly": "jasmine test/spec/env/pkgs-spec.js && npm run snyk-protect:optional"
   },
   "repository": {
     "type": "git",