Update workflows to specify pull request types for branch triggers

Author: asteriscos

.github/workflows/lint-workflow.yml

@@ -2,7 +2,8 @@ name: Lint workflow
 on:
   pull_request:
     branches:
-      - '*'
+      - "*"
+    types: [opened, synchronize, reopened, ready_for_review]
 env:
   OPENSEARCH_DASHBOARDS_VERSION: '2.x'
 jobs:

.github/workflows/unit-tests-workflow.yml

@@ -2,7 +2,8 @@ name: Unit tests workflow
 on:
   pull_request:
     branches:
-      - '*'
+      - "*"
+    types: [opened, synchronize, reopened, ready_for_review]
 env:
   OPENSEARCH_DASHBOARDS_VERSION: '2.x'
 jobs:

.github/workflows/verify-binary-installation.yml

@@ -1,6 +1,10 @@
 name: 'Install Dashboards with Plugin via Binary'
 
-on: [pull_request]
+on:
+  pull_request:
+    branches:
+      - "*"
+    types: [opened, synchronize, reopened, ready_for_review]
 env:
   OPENSEARCH_VERSION: '3.0.0'
   CI: 1