remove issue +tag co-authors

Co-Authored-By: Echedey Luis <80125792+echedey-ls@users.noreply.github.com>
Co-Authored-By: Kevin Anderson <57452607+kandersolar@users.noreply.github.com>

Author: 3 people

.github/workflows/welcome.yml

@@ -1,16 +1,13 @@
 name: Welcome First-Time Contributor
 
 on:
-  issues:
-    types: opened
   pull_request_target:
     types: opened
 
 jobs:
   welcome:
     runs-on: ubuntu-latest
     permissions:
-      issues: write
       pull-requests: write
     steps:
       - uses: plbstl/first-contribution@v4