chore(deps): update dependency @edx/frontend-platform to v1.12.6

Author: renovate-bot

package-lock.json

@@ -40,7 +40,7 @@
     "@commitlint/prompt-cli": "13.1.0",
     "@edx/brand": "npm:@edx/[email protected]",
     "@edx/frontend-build": "5.6.14",
-    "@edx/frontend-platform": "1.12.4",
+    "@edx/frontend-platform": "1.12.6",
     "@edx/paragon": "12.8.0",
     "codecov": "3.8.3",
     "enzyme": "3.11.0",