Too many request when fetching resources as github action

So I have this python script that parses RSS feeds from Reddit.
I have published it as an action, It use to work fine but nowadays it has been returning 429 (too many requests)
The script: memer-action/main.py at 00d05fd71dbe1745a188d66b5659eee43c058df0 · Bhupesh-V/memer-action · GitHub
Action Log: test again 5 · Bhupesh-V/memer-action@253faf6 · GitHub

I checked to fetch Reddit RSS locally It doesn’t return 429