Bug: PR validation script was failing on some cases

[YashasviDevtron]

📜 Description

The PR validation script was failing because it was unable to fetch the issue number linked in some of the PRs.

👟 Reproduction steps

N/A

👍 Expected behavior

N/A

👎 Actual Behavior

N/A

☸ Kubernetes version

1.23

Cloud provider

🌍 Browser

Chrome

🧱 Your Environment

No response

✅ Proposed Solution

No response

👀 Have you spent some time to check if this issue has been raised before?

• [X] I checked and didn't find any similar issue

🏢 Have you read the Code of Conduct?

• [X] I have read the Code of Conduct

AB#10062