github: workflows: restricted AArch64 CI to relevant changes

.github/workflows/ci-aarch64.yml

@@ -21,8 +21,30 @@ name: "CI AArch64"
 #* https://github.com/orgs/community/discussions/26940#discussioncomment-5686753
 on:
   push:
+    branches: [ main, rls-* ]
+    paths:
+     - .github/**
+      - cmake/**
+      - examples/**
+      - include/**
+      - src/common/**
+      - src/cpu/*
+      - src/cpu/aarch64/**
+      - tests/**
+      - CMakeLists.txt
   pull_request:
     types: [opened, synchronize, reopened]
+    paths:
+    paths:
+     - .github/**
+      - cmake/**
+      - examples/**
+      - include/**
+      - src/common/**
+      - src/cpu/*
+      - src/cpu/aarch64/**
+      - tests/**
+      - CMakeLists.txt
 
 #* Stop stale workflows when pull requests are updated: https://stackoverflow.com/a/70972844
 #* Does not apply to the main branch.