Update workflow to execute only with dependabot based PRs

.github/workflows/requirement-check.yml

@@ -1,9 +1,10 @@
 name: Check Requirements Update
 
 on:
-  label:
-    types:
-      - dependabot
+  pull_request:
+    types: [ labeled ]
+    paths:
+      - 'automation/requirements.txt'
 
 env:
   GIT_AUTHOR_NAME: Foreman Packaging Automation
@@ -15,7 +16,7 @@ jobs:
   rpm_list:
     name: 'Check Package to Update'
     runs-on: ubuntu-latest
-    if: github.repository_owner == 'theforeman'
+    if: contains(github.event.pull_request.labels.*.name, 'dependabot')
     steps:
     - name: Checkout Repository
       uses: actions/checkout@v4