ci: use filtering for all

.github/workflows/macos.yml

@@ -1,7 +1,18 @@
-on: [push, pull_request]
-
 name: macOS tests
 
+on:
+  push:
+    paths:
+      - packages/**
+      - examples/**
+      - src/**
+      - .github/**
+      - lib.rs
+      - Cargo.toml
+  pull_request:
+    branches:
+      - master
+
 jobs:
   test:
     name: Test Suite

.github/workflows/windows.yml

@@ -1,9 +1,17 @@
 name: windows
+
 on:
   push:
+    paths:
+      - packages/**
+      - examples/**
+      - src/**
+      - .github/**
+      - lib.rs
+      - Cargo.toml
+  pull_request:
     branches:
       - master
-  pull_request:
 
 jobs:
   test: