Added new branch in PR validator action

Author: kamal-devtron

.github/workflows/pr-issue-validator.yaml

@@ -12,6 +12,7 @@ on:
       - 'release-**'
       - 'develop'
       - 'hotfix-**'
+      - 'kubecon-**'
     # paths-ignore:
     #   - 'docs/**'
     #   - '.github/'
@@ -42,4 +43,4 @@ jobs:
       run: |
         wget https://raw.githubusercontent.com/devtron-labs/utilities/feat/central-pr-validator/.github/workflows/validateIssue.sh
         chmod +x validateIssue.sh
-        ./validateIssue.sh 
+        ./validateIssue.sh