chore: Track flagsmith-nodejs-sdk 6.2.0 (#6242)

Co-authored-by: flagsmith-engineering[bot] <flagsmith-engineering[bot]@users.noreply.github.com>
Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: 3 people

api/app_analytics/constants.py

@@ -29,7 +29,10 @@
         "9.3.1",
     ],
     "flagsmith-kotlin-android-sdk": ["unknown"],
-    "flagsmith-nodejs-sdk": ["unknown"],
+    "flagsmith-nodejs-sdk": [
+        "unknown",
+        "6.2.0",
+    ],
     "flagsmith-php-sdk": ["unknown"],
     "flagsmith-python-sdk": [
         "unknown",