Update CI workflow: ensure npm version 10.9.2 is installed globally

.github/workflows/ci.yml

@@ -48,7 +48,7 @@ jobs:
               echo "Invalid npm version, expected $NPM_VERSION, got $CURR_NPM_VERSION"
               npm install npm@$NPM_VERSION
           fi
-          npm install -g npm@11.0.0
+          npm install -g npm@10.9.2
           npm install enketo-transformer
           npm install libxslt