chore: fix lint

Author: Leksat

packages/npm/@amazeelabs/decap-cms-backend-token-auth/.eslintrc.cjs

@@ -1,4 +1,9 @@
 module.exports = {
   extends: ['@amazeelabs/eslint-config'],
   root: true,
+  rules: {
+    // This rule breaks linting on Linux. We don't need it for this package
+    // anyway, so we turn it off.
+    'react/no-is-mounted': ['off'],
+  },
 };