chore(github): Disable some GH actions on forks (#2566)

Signed-off-by: Tim Collins <tim@thecollins.team>

.github/workflows/publish.yml

@@ -12,6 +12,7 @@ permissions:
 
 jobs:
   publish:
+    if: github.repository == 'argoproj/argo-helm'
     permissions:
       contents: write  # for helm/chart-releaser-action to push chart release and create a release
       packages: write  # to push OCI chart package to GitHub Registry

.github/workflows/renovate.yaml

@@ -12,6 +12,7 @@ permissions:
 
 jobs:
   renovate:
+    if: github.repository == 'argoproj/argo-helm'
     runs-on: ubuntu-latest
     steps:
       - name: Get token