Use macos-14 instead of macos-arm-oss

Unfortunately, we can't use macos-arm-oss with enterprise account

.github/workflows/codeql-analysis.yml

@@ -32,7 +32,7 @@ permissions: # added using https://github.com/step-security/secure-workflows
 jobs:
   analyze:
     name: Analyze
-    runs-on: ${{ matrix.os }}
+    runs-on: ubuntu-latest
     permissions:
       actions: read # for github/codeql-action/init to get workflow details
       contents: read # for actions/checkout to fetch code
@@ -56,10 +56,7 @@ jobs:
       matrix:
         include:
           - language: cpp
-            os: ubuntu-latest
-          # ruby analysis used large memory. We need to use a larger runner.
           - language: ruby
-            os: ${{ github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'ubuntu-latest' }}
 
     steps:
       - name: Checkout repository

.github/workflows/macos.yml

@@ -26,10 +26,14 @@ jobs:
       matrix:
         include:
           - test_task: check
+            os: macos-14
           - test_task: test-all
             test_opts: --repeat-count=2
+            os: macos-14
           - test_task: test-bundler-parallel
+            os: macos-14
           - test_task: test-bundled-gems
+            os: macos-14
           - test_task: check
             os: macos-12
           - test_task: check
@@ -39,7 +43,7 @@ jobs:
     env:
       GITPULLOPTIONS: --no-tags origin ${{ github.ref }}
 
-    runs-on: ${{ matrix.os || (github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'macos-14') }}
+    runs-on: ${{ matrix.os }}
 
     if: >-
       ${{!(false
@@ -94,7 +98,7 @@ jobs:
       - name: Set up Launchable
         uses: ./.github/actions/launchable/setup
         with:
-          os: ${{ matrix.os || (github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'macos-14') }}
+          os: ${{ matrix.os }}
           test-opts: ${{ matrix.test_opts }}
           launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
           builddir: build
@@ -129,7 +133,7 @@ jobs:
 
       - uses: ./.github/actions/slack
         with:
-          label: ${{ matrix.os || (github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'macos-14') }} / ${{ matrix.test_task }}
+          label: ${{ matrix.os }} / ${{ matrix.test_task }}
           SLACK_WEBHOOK_URL: ${{ secrets.SIMPLER_ALERTS_URL }} # ruby-lang slack: ruby/simpler-alerts-bot
         if: ${{ failure() }}
 

.github/workflows/yjit-macos.yml

@@ -24,7 +24,7 @@ jobs:
   cargo:
     name: cargo test
 
-    runs-on: ${{ github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'macos-14' }}
+    runs-on: macos-14
 
     if: >-
       ${{!(false
@@ -68,7 +68,7 @@ jobs:
       RUN_OPTS: ${{ matrix.yjit_opts }}
       SPECOPTS: ${{ matrix.specopts }}
 
-    runs-on: ${{ github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'macos-14' }}
+    runs-on: macos-14
 
     if: >-
       ${{!(false
@@ -119,7 +119,7 @@ jobs:
       - name: Set up Launchable
         uses: ./.github/actions/launchable/setup
         with:
-          os: ${{ github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'macos-14' }}
+          os: macos-14
           test-opts: ${{ matrix.configure }}
           launchable-token: ${{ secrets.LAUNCHABLE_TOKEN }}
           builddir: build
@@ -158,7 +158,7 @@ jobs:
   result:
     if: ${{ always() }}
     name: ${{ github.workflow }} result
-    runs-on: ${{ github.repository == 'ruby/ruby' && 'macos-arm-oss' || 'macos-14' }}
+    runs-on: macos-14
     needs: [make]
     steps:
       - run: exit 1