Remove HANA tokens after updating; forces re-issue from the server an…

…d ensure any outdated tokens are removed (#160)

Co-authored-by: Daniel McKnight <daniel@neon.ai>

overlays/31-updater-service/opt/neon/finalize_update

@@ -39,4 +39,7 @@ chmod +x /opt/neon/validate_directory_permissions
 if [ -d "${home_dir}/.local/share/neon/skills/skill-icanhazdadjokes.jarbasskills" ]; then
     echo "Legacy jokes skill found and will be removed"
     rm -rf "${home_dir}/.local/share/neon/skills/skill-icanhazdadjokes.jarbasskills"
-fi
+fi
+
+# Cleanup old HANA tokens
+rm "${home_dir}/.cache/neon/hana_token_"*