Update lint_test_build_pipeline.yml

Author: ikostan

.github/workflows/lint_test_build_pipeline.yml

@@ -2,6 +2,17 @@
 name: Main Build Pipeline
 
 on:   # yamllint disable-line rule:truthy
+  pull_request:
+    branches-ignore:
+      - 'kyu2'
+      - 'kyu3'
+      - 'kyu4'
+      - 'kyu5'
+      - 'kyu6'
+      - 'kyu7'
+      - 'kyu8'
+      - 'utils'
+      - 'Documentation'
   push:
     branches-ignore:
       - 'kyu2'