Speed up CI (#1419)

* Enable KVM on base Linux image

https://github.blog/changelog/2023-02-23-hardware-accelerated-android-virtualization-on-actions-windows-and-linux-larger-hosted-runners

* Use Apple silicon images on CI

https://github.blog/changelog/2024-01-30-github-actions-introducing-the-new-m1-macos-runner-available-to-open-source

* Update .github/workflows/build.yml

---------

Co-authored-by: Jesse Wilson <jwilson@squareup.com>

.github/workflows/build.yml

@@ -43,8 +43,15 @@ jobs:
           ./gradlew -Dkjs=false -Dknative=false -Dkwasm=false -Dtest.java.version=${{ matrix.java-version }} build --stacktrace
 
   emulator:
-    runs-on: macos-latest
+    runs-on: ubuntu-latest
     steps:
+      # https://github.blog/changelog/2023-02-23-hardware-accelerated-android-virtualization-on-actions-windows-and-linux-larger-hosted-runners/
+      - name: Enable KVM group perms
+        run: |
+          echo 'KERNEL=="kvm", GROUP="kvm", MODE="0666", OPTIONS+="static_node=kvm"' | sudo tee /etc/udev/rules.d/99-kvm4all.rules
+          sudo udevadm control --reload-rules
+          sudo udevadm trigger --name-match=kvm
+          ls /dev/kvm
       - uses: actions/checkout@v4
       - uses: actions/setup-java@v4
         with:
@@ -87,7 +94,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        os: [ macos-11, ubuntu-latest, windows-latest ]
+        os: [ macos-14, ubuntu-latest, windows-latest ]
 
     steps:
       - name: Checkout
@@ -120,7 +127,7 @@ jobs:
           path: '**/build/reports'
 
   publish:
-    runs-on: macos-13
+    runs-on: macos-14
     if: github.repository == 'square/okio' && github.ref == 'refs/heads/master'
     needs: [jvm, all-platforms, emulator]