ci: use self-hosted mac arm runner (denoland#26366)

Supersedes denoland#26337

Author: bartlomieju

.github/workflows/ci.generate.ts

@@ -40,7 +40,8 @@ const Runners = {
   macosArm: {
     os: "macos",
     arch: "aarch64",
-    runner: macosArmRunner,
+    runner:
+      `\${{ github.repository == 'denoland/deno' && 'self-hosted' || '${macosArmRunner}' }}`,
   },
   windowsX86: {
     os: "windows",

.github/workflows/ci.yml

@@ -68,12 +68,12 @@ jobs:
             skip: '${{ !contains(github.event.pull_request.labels.*.name, ''ci-full'') && (github.event_name == ''pull_request'') }}'
           - os: macos
             arch: aarch64
-            runner: macos-14
+            runner: '${{ github.repository == ''denoland/deno'' && ''self-hosted'' || ''macos-14'' }}'
             job: test
             profile: debug
           - os: macos
             arch: aarch64
-            runner: '${{ (!contains(github.event.pull_request.labels.*.name, ''ci-full'') && (github.event_name == ''pull_request'')) && ''ubuntu-22.04'' || ''macos-14'' }}'
+            runner: '${{ (!contains(github.event.pull_request.labels.*.name, ''ci-full'') && (github.event_name == ''pull_request'')) && ''ubuntu-22.04'' || github.repository == ''denoland/deno'' && ''self-hosted'' || ''macos-14'' }}'
             job: test
             profile: release
             skip: '${{ !contains(github.event.pull_request.labels.*.name, ''ci-full'') && (github.event_name == ''pull_request'') }}'