tools: run build-windows workflow only on source changes

PR-URL: nodejs#51596
Reviewed-By: Moshe Atlow <moshe@atlow.co.il>
Reviewed-By: Marco Ippolito <marcoippolito54@gmail.com>
Reviewed-By: Tierney Cyren <hello@bnb.im>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz.nizipli@sentry.io>

.github/workflows/build-windows.yml

@@ -2,21 +2,27 @@ name: Build Windows
 
 on:
   pull_request:
-    paths-ignore:
-      - README.md
-      - .github/**
-      - '!.github/workflows/build-windows.yml'
+    paths:
+      - lib/**/*.js
+      - Makefile
+      - src/**/*.cc
+      - src/**/*.h
+      - tools/gyp/**
+      - .github/workflows/build-windows.yml
     types: [opened, synchronize, reopened, ready_for_review]
   push:
     branches:
       - main
       - canary
       - v[0-9]+.x-staging
       - v[0-9]+.x
-    paths-ignore:
-      - README.md
-      - .github/**
-      - '!.github/workflows/build-windows.yml'
+    paths:
+      - lib/**/*.js
+      - Makefile
+      - src/**/*.cc
+      - src/**/*.h
+      - tools/gyp/**
+      - .github/workflows/build-windows.yml
 
 concurrency:
   group: ${{ github.workflow }}-${{ github.head_ref || github.run_id }}